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157156620 = 22352619277
BaseRepresentation
bin10010101111000…
…00010100001100
3101221201101100120
421113200110030
5310213002440
623332224540
73615544365
oct1127402414
9357641316
10157156620
1180790105
124476b150
13267364aa
1416c2cb6c
15dbe4dd0
hex95e050c

157156620 has 24 divisors (see below), whose sum is σ = 440038704. Its totient is φ = 41908416.

The previous prime is 157156609. The next prime is 157156621. The reversal of 157156620 is 26651751.

It is not an unprimeable number, because it can be changed into a prime (157156621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309579 + ... + 1309698.

It is an arithmetic number, because the mean of its divisors is an integer number (18334946).

Almost surely, 2157156620 is an apocalyptic number.

157156620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157156620 is an abundant number, since it is smaller than the sum of its proper divisors (282882084).

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

157156620 is a wasteful number, since it uses less digits than its factorization.

157156620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619289 (or 2619287 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 157156620 is about 12536.2123466380. The cubic root of 157156620 is about 539.6483993761.

The spelling of 157156620 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 2619277 5238554 7857831 10477108 13096385 15715662 26192770 31431324 39289155 52385540 78578310 157156620