157670090 has 16 divisors (see below), whose sum is σ = 286617960. Its totient is φ = 62443200.

The previous prime is 157670089. The next prime is 157670099. The reversal of 157670090 is 90076751.

It can be written as a sum of positive squares in 4 ways, for example, as 156825529 + 844561 = 12523^2 + 919^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157670090.

It is not an unprimeable number, because it can be changed into a prime (157670099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77045 + ... + 79064.

Almost surely, 2^157670090 is an apocalyptic number.

157670090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157670090 is a deficient number, since it is larger than the sum of its proper divisors (128947870).

157670090 is a wasteful number, since it uses less digits than its factorization.

157670090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156217.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 157670090 is about 12556.6751172434. The cubic root of 157670090 is about 540.2354825727.

The spelling of 157670090 in words is "one hundred fifty-seven million, six hundred seventy thousand, ninety".