120972636 has 48 divisors (see below), whose sum is σ = 314899200. Its totient is φ = 40161456.

The previous prime is 120972619. The next prime is 120972671. The reversal of 120972636 is 636279021.

120972636 is a `hidden beast` number, since 12 + 0 + 9 + 7 + 2 + 636 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 120972636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26275 + ... + 30533.

It is an arithmetic number, because the mean of its divisors is an integer number (6560400).

Almost surely, 2^120972636 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 120972636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157449600).

120972636 is an abundant number, since it is smaller than the sum of its proper divisors (193926564).

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

120972636 is a wasteful number, since it uses less digits than its factorization.

120972636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4527 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 120972636 is about 10998.7561114882. The cubic root of 120972636 is about 494.5714564624.

The spelling of 120972636 in words is "one hundred twenty million, nine hundred seventy-two thousand, six hundred thirty-six".