920988 has 18 divisors (see below), whose sum is σ = 2328144. Its totient is φ = 306984.

The previous prime is 920971. The next prime is 920999. The reversal of 920988 is 889029.

920988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×920988² = 1696437792288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 25583 = 920988 / (9 + 2 + 0 + 9 + 8 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12756 + ... + 12827.

2⁹²⁰⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

920988 is an abundant number, since it is smaller than the sum of its proper divisors (1407156).

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

920988 is a wasteful number, since it uses less digits than its factorization.

920988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593 (or 25588 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 920988 is about 959.6811970649. The cubic root of 920988 is about 97.2936860271.

The spelling of 920988 in words is "nine hundred twenty thousand, nine hundred eighty-eight".