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157264140 = 2235111912541
BaseRepresentation
bin10010101111110…
…10100100001100
3101221220211211210
421113322210030
5310224423030
623334414420
73616503015
oct1127724414
9357824753
10157264140
1180853970
1244801410
1326773407
1416c5a00c
15dc16bb0
hex95fa90c

157264140 has 96 divisors (see below), whose sum is σ = 505693440. Its totient is φ = 36115200.

The previous prime is 157264139. The next prime is 157264153. The reversal of 157264140 is 41462751.

157264140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 157264098 and 157264107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6270 + ... + 18810.

It is an arithmetic number, because the mean of its divisors is an integer number (5267640).

Almost surely, 2157264140 is an apocalyptic number.

157264140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 12540×12541.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157264140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252846720).

157264140 is an abundant number, since it is smaller than the sum of its proper divisors (348429300).

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

157264140 is a wasteful number, since it uses less digits than its factorization.

157264140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12583 (or 12581 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 157264140 is about 12540.4999900323. The cubic root of 157264140 is about 539.7714396244.

The spelling of 157264140 in words is "one hundred fifty-seven million, two hundred sixty-four thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 11 12 15 19 20 22 30 33 38 44 55 57 60 66 76 95 110 114 132 165 190 209 220 228 285 330 380 418 570 627 660 836 1045 1140 1254 2090 2508 3135 4180 6270 12540 12541 25082 37623 50164 62705 75246 125410 137951 150492 188115 238279 250820 275902 376230 413853 476558 551804 689755 714837 752460 827706 953116 1191395 1379510 1429674 1655412 2069265 2382790 2621069 2759020 2859348 3574185 4138530 4765580 5242138 7148370 7863207 8277060 10484276 13105345 14296740 15726414 26210690 31452828 39316035 52421380 78632070 157264140