920457890 has 96 divisors (see below), whose sum is σ = 1919490048. Its totient is φ = 317116800.

The previous prime is 920457887. The next prime is 920457947. The reversal of 920457890 is 98754029.

It is a happy number.

920457890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1987799 + ... + 1988261.

It is an arithmetic number, because the mean of its divisors is an integer number (19994688).

Almost surely, 2^920457890 is an apocalyptic number.

920457890 is an abundant number, since it is smaller than the sum of its proper divisors (999032158).

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

920457890 is a wasteful number, since it uses less digits than its factorization.

920457890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 920457890 is about 30339.0489303801. The cubic root of 920457890 is about 972.7501540578.

The spelling of 920457890 in words is "nine hundred twenty million, four hundred fifty-seven thousand, eight hundred ninety".