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20770225060 = 225132193110433
BaseRepresentation
bin10011010110000000…
…000111101110100100
31222121111211202101211
4103112000013232210
5320014134200220
613313002001204
71333464000004
oct232600075644
958544752354
1020770225060
118899283562
124037aa6204
131c60134100
141010700004
158186b0b5a
hex4d6007ba4

20770225060 has 144 divisors (see below), whose sum is σ = 51325263360. Its totient is φ = 7030333440.

The previous prime is 20770225057. The next prime is 20770225061. The reversal of 20770225060 is 6052207702.

20770225060 = T159 + T160 + ... + T4994.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (20770225061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1985604 + ... + 1996036.

It is an arithmetic number, because the mean of its divisors is an integer number (356425440).

Almost surely, 220770225060 is an apocalyptic number.

20770225060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20770225060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25662631680).

20770225060 is an abundant number, since it is smaller than the sum of its proper divisors (30555038300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20770225060 is a wasteful number, since it uses less digits than its factorization.

20770225060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518 (or 10503 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The spelling of 20770225060 in words is "twenty billion, seven hundred seventy million, two hundred twenty-five thousand, sixty".

Divisors: 1 2 4 5 10 13 19 20 26 31 38 52 62 65 76 95 124 130 155 169 190 247 260 310 338 380 403 494 589 620 676 806 845 988 1178 1235 1612 1690 2015 2356 2470 2945 3211 3380 4030 4940 5239 5890 6422 7657 8060 10433 10478 11780 12844 15314 16055 20866 20956 26195 30628 32110 38285 41732 52165 52390 64220 76570 99541 104330 104780 135629 153140 198227 199082 208660 271258 323423 396454 398164 497705 542516 646846 678145 792908 991135 995410 1293692 1356290 1617115 1763177 1982270 1990820 2576951 2712580 3234230 3526354 3964540 4204499 5153902 6145037 6468460 7052708 8408998 8815885 10307804 12290074 12884755 16817996 17631770 21022495 24580148 25769510 30725185 33500363 35263540 42044990 51539020 54658487 61450370 67000726 79885481 84089980 109316974 122900740 134001452 159770962 167501815 218633948 273292435 319541924 335003630 399427405 546584870 670007260 798854810 1038511253 1093169740 1597709620 2077022506 4154045012 5192556265 10385112530 20770225060