156609984 has 56 divisors (see below), whose sum is σ = 438747408. Its totient is φ = 49131520.

The previous prime is 156609979. The next prime is 156609991. The reversal of 156609984 is 489906651.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 20727 + ... + 27254.

Almost surely, 2^156609984 is an apocalyptic number.

It is an amenable number.

156609984 is an abundant number, since it is smaller than the sum of its proper divisors (282137424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156609984 is a wasteful number, since it uses less digits than its factorization.

156609984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48013 (or 48003 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 156609984 is about 12514.3910758774. The cubic root of 156609984 is about 539.0219883338.

The spelling of 156609984 in words is "one hundred fifty-six million, six hundred nine thousand, nine hundred eighty-four".