157830804 has 18 divisors (see below), whose sum is σ = 398961290. Its totient is φ = 52610256.

The previous prime is 157830797. The next prime is 157830809. The reversal of 157830804 is 408038751.

157830804 is a `hidden beast` number, since 1 + 578 + 3 + 0 + 80 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 46949904 = 10530^2 + 6852^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4384189 = 157830804 / (1 + 5 + 7 + 8 + 3 + 0 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157830809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2192059 + ... + 2192130.

Almost surely, 2^157830804 is an apocalyptic number.

It is an amenable number.

157830804 is an abundant number, since it is smaller than the sum of its proper divisors (241130486).

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

157830804 is a wasteful number, since it uses less digits than its factorization.

157830804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384199 (or 4384194 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 157830804 is about 12563.0730317069. The cubic root of 157830804 is about 540.4189752529.

The spelling of 157830804 in words is "one hundred fifty-seven million, eight hundred thirty thousand, eight hundred four".