156989234 has 8 divisors (see below), whose sum is σ = 239344428. Its totient is φ = 77207760.

The previous prime is 156989197. The next prime is 156989251. The reversal of 156989234 is 432989651.

It can be written as a sum of positive squares in 2 ways, for example, as 156325009 + 664225 = 12503^2 + 815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643277 + ... + 643520.

Almost surely, 2^156989234 is an apocalyptic number.

156989234 is a deficient number, since it is larger than the sum of its proper divisors (82355194).

156989234 is a wasteful number, since it uses less digits than its factorization.

156989234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286860.

The product of its digits is 466560, while the sum is 47.

The square root of 156989234 is about 12529.5344686066. The cubic root of 156989234 is about 539.4567398802.

The spelling of 156989234 in words is "one hundred fifty-six million, nine hundred eighty-nine thousand, two hundred thirty-four".