156380434 has 32 divisors (see below), whose sum is σ = 272019456. Its totient is φ = 66044160.

The previous prime is 156380401. The next prime is 156380449. The reversal of 156380434 is 434083651.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 156380434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499462 + ... + 499774.

It is an arithmetic number, because the mean of its divisors is an integer number (8500608).

Almost surely, 2^156380434 is an apocalyptic number.

156380434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

156380434 is a deficient number, since it is larger than the sum of its proper divisors (115639022).

156380434 is a wasteful number, since it uses less digits than its factorization.

156380434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 156380434 is about 12505.2162716204. The cubic root of 156380434 is about 538.7585036421.

The spelling of 156380434 in words is "one hundred fifty-six million, three hundred eighty thousand, four hundred thirty-four".