920838720 has 56 divisors (see below), whose sum is σ = 2923665984. Its totient is φ = 245556736.

The previous prime is 920838719. The next prime is 920838731. The reversal of 920838720 is 27838029.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 478644 + ... + 480563.

Almost surely, 2^920838720 is an apocalyptic number.

It is an amenable number.

920838720 is an abundant number, since it is smaller than the sum of its proper divisors (2002827264).

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

920838720 is a wasteful number, since it uses less digits than its factorization.

920838720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959227 (or 959217 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 920838720 is about 30345.3245163073. The cubic root of 920838720 is about 972.8842906893.

The spelling of 920838720 in words is "nine hundred twenty million, eight hundred thirty-eight thousand, seven hundred twenty".