920821068 has 48 divisors (see below), whose sum is σ = 2404528000. Its totient is φ = 304727184.

The previous prime is 920821037. The next prime is 920821087. The reversal of 920821068 is 860128029.

It is a super-2 number, since 2×920821068² = 1695822878545321248, which contains 22 as substring.

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

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, 15658 + ... + 45681.

Almost surely, 2^920821068 is an apocalyptic number.

It is an amenable number.

920821068 is an abundant number, since it is smaller than the sum of its proper divisors (1483706932).

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

920821068 is a wasteful number, since it uses less digits than its factorization.

920821068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61491 (or 61483 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 920821068 is about 30345.0336628582. The cubic root of 920821068 is about 972.8780740874.

It can be divided in two parts, 9208 and 21068, that added together give a square (30276 = 174²).

The spelling of 920821068 in words is "nine hundred twenty million, eight hundred twenty-one thousand, sixty-eight".