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157012887 = 3191274019
BaseRepresentation
bin10010101101111…
…01001110010111
3101221110002012010
421112331032113
5310143403022
623325155303
73614405343
oct1126751627
9357402163
10157012887
11806a2119
12446bbb33
13266b5c45
1416bd2623
15dbb750c
hex95bd397

157012887 has 8 divisors (see below), whose sum is σ = 210447360. Its totient is φ = 104126840.

The previous prime is 157012859. The next prime is 157012913. The reversal of 157012887 is 788210751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157012887 - 28 = 157012631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157012837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136437 + ... + 137582.

It is an arithmetic number, because the mean of its divisors is an integer number (26305920).

Almost surely, 2157012887 is an apocalyptic number.

157012887 is a deficient number, since it is larger than the sum of its proper divisors (53434473).

157012887 is a wasteful number, since it uses less digits than its factorization.

157012887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274213.

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 157012887 is about 12530.4783228734. The cubic root of 157012887 is about 539.4838311849.

The spelling of 157012887 in words is "one hundred fifty-seven million, twelve thousand, eight hundred eighty-seven".

Divisors: 1 3 191 573 274019 822057 52337629 157012887