156678434 has 16 divisors (see below), whose sum is σ = 257691456. Its totient is φ = 70854000.

The previous prime is 156678419. The next prime is 156678491. The reversal of 156678434 is 434876651.

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 7 ways as a sum of consecutive naturals, for example, 13742 + ... + 22409.

It is an arithmetic number, because the mean of its divisors is an integer number (16105716).

Almost surely, 2^156678434 is an apocalyptic number.

156678434 is a deficient number, since it is larger than the sum of its proper divisors (101013022).

156678434 is a wasteful number, since it uses less digits than its factorization.

156678434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36361.

The product of its digits is 483840, while the sum is 44.

The square root of 156678434 is about 12517.1256285139. The cubic root of 156678434 is about 539.1005075530.

The spelling of 156678434 in words is "one hundred fifty-six million, six hundred seventy-eight thousand, four hundred thirty-four".