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38237013780 = 22357223565469
BaseRepresentation
bin100011100111000110…
…101000011100010100
310122200210200120001120
4203213012220130110
51111302133420110
625322115523540
72522356153200
oct434706503424
9118623616046
1038237013780
1115241885439
1274b15b95b0
1337b4a51a54
141bca3abb00
15edbd40870
hex8e71a8714

38237013780 has 144 divisors (see below), whose sum is σ = 129958577280. Its totient is φ = 8359878912.

The previous prime is 38237013769. The next prime is 38237013817. The reversal of 38237013780 is 8731073283.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215115 + ... + 350354.

It is an arithmetic number, because the mean of its divisors is an integer number (902490120).

Almost surely, 238237013780 is an apocalyptic number.

38237013780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38237013780 is an abundant number, since it is smaller than the sum of its proper divisors (91721563500).

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

38237013780 is a wasteful number, since it uses less digits than its factorization.

38237013780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565518 (or 565509 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 38237013780 in words is "thirty-eight billion, two hundred thirty-seven million, thirteen thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 23 28 30 35 42 46 49 60 69 70 84 92 98 105 115 138 140 147 161 196 210 230 245 276 294 322 345 420 460 483 490 588 644 690 735 805 966 980 1127 1380 1470 1610 1932 2254 2415 2940 3220 3381 4508 4830 5635 6762 9660 11270 13524 16905 22540 33810 67620 565469 1130938 1696407 2261876 2827345 3392814 3958283 5654690 6785628 7916566 8482035 11309380 11874849 13005787 15833132 16964070 19791415 23749698 26011574 27707981 33928140 39017361 39582830 47499396 52023148 55415962 59374245 65028935 78034722 79165660 83123943 91040509 110831924 118748490 130057870 138539905 156069444 166247886 182081018 195086805 237496980 260115740 273121527 277079810 332495772 364162036 390173610 415619715 455202545 546243054 554159620 637283563 780347220 831239430 910405090 1092486108 1274567126 1365607635 1662478860 1820810180 1911850689 2549134252 2731215270 3186417815 3823701378 5462430540 6372835630 7647402756 9559253445 12745671260 19118506890 38237013780