156204004 has 12 divisors (see below), whose sum is σ = 298207728. Its totient is φ = 71001800.

The previous prime is 156203987. The next prime is 156204011. The reversal of 156204004 is 400402651.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1775002 + ... + 1775089.

It is an arithmetic number, because the mean of its divisors is an integer number (24850644).

Almost surely, 2^156204004 is an apocalyptic number.

It is an amenable number.

156204004 is a deficient number, since it is larger than the sum of its proper divisors (142003724).

156204004 is a wasteful number, since it uses less digits than its factorization.

156204004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550106 (or 3550104 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 156204004 is about 12498.1600245796. The cubic root of 156204004 is about 538.5558164529. Note that the first 3 decimals are identical.

Adding to 156204004 its reverse (400402651), we get a palindrome (556606655).

The spelling of 156204004 in words is "one hundred fifty-six million, two hundred four thousand, four".