157795290 has 40 divisors (see below), whose sum is σ = 424296180. Its totient is φ = 42078528.

The previous prime is 157795273. The next prime is 157795291. The reversal of 157795290 is 92597751.

157795290 is a `hidden beast` number, since 1 + 57 + 79 + 529 + 0 = 666.

157795290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156275001 + 1520289 = 12501^2 + 1233^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (157795291) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96595 + ... + 98214.

Almost surely, 2^157795290 is an apocalyptic number.

157795290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157795290 is an abundant number, since it is smaller than the sum of its proper divisors (266500890).

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

157795290 is a wasteful number, since it uses less digits than its factorization.

157795290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194828 (or 194819 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 157795290 is about 12561.6595241234. The cubic root of 157795290 is about 540.3784384276.

The spelling of 157795290 in words is "one hundred fifty-seven million, seven hundred ninety-five thousand, two hundred ninety".