156804430 has 32 divisors (see below), whose sum is σ = 302478624. Its totient is φ = 58315776.

The previous prime is 156804391. The next prime is 156804443. The reversal of 156804430 is 34408651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 156804392 and 156804401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8554 + ... + 19666.

It is an arithmetic number, because the mean of its divisors is an integer number (9452457).

Almost surely, 2^156804430 is an apocalyptic number.

156804430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156804430 is a deficient number, since it is larger than the sum of its proper divisors (145674194).

156804430 is a wasteful number, since it uses less digits than its factorization.

156804430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 156804430 is about 12522.1575616984. The cubic root of 156804430 is about 539.2449782083.

The spelling of 156804430 in words is "one hundred fifty-six million, eight hundred four thousand, four hundred thirty".