972156 has 12 divisors (see below), whose sum is σ = 2268392. Its totient is φ = 324048.

The previous prime is 972137. The next prime is 972161. The reversal of 972156 is 651279.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

972156 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 40495 + ... + 40518.

2⁹⁷²¹⁵⁶ is an apocalyptic number.

It is an amenable number.

972156 is an abundant number, since it is smaller than the sum of its proper divisors (1296236).

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

972156 is a wasteful number, since it uses less digits than its factorization.

972156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81020 (or 81018 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 972156 is about 985.9797158157. The cubic root of 972156 is about 99.0631165728.

It can be divided in two parts, 972 and 156, that added together give a triangular number (1128 = T₄₇).

The spelling of 972156 in words is "nine hundred seventy-two thousand, one hundred fifty-six".