156984 has 32 divisors (see below), whose sum is σ = 407040. Its totient is φ = 50400.

The previous prime is 156979. The next prime is 157007. The reversal of 156984 is 489651.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 156984.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639 + ... + 849.

It is an arithmetic number, because the mean of its divisors is an integer number (12720).

2¹⁵⁶⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203520).

156984 is an abundant number, since it is smaller than the sum of its proper divisors (250056).

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

156984 is a wasteful number, since it uses less digits than its factorization.

156984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 156984 is about 396.2120644301. The cubic root of 156984 is about 53.9450744675.

It can be divided in two parts, 1569 and 84, that added together give a triangular number (1653 = T₅₇).

The spelling of 156984 in words is "one hundred fifty-six thousand, nine hundred eighty-four".