22915023940 has 24 divisors (see below), whose sum is σ = 48125007000. Its totient is φ = 9165351168.

The previous prime is 22915023917. The next prime is 22915023941. The reversal of 22915023940 is 4932051922.

It can be written as a sum of positive squares in 4 ways, for example, as 1994872896 + 20920151044 = 44664^2 + 144638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22915023940.

It is not an unprimeable number, because it can be changed into a prime (22915023941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322704 + ... + 387256.

It is an arithmetic number, because the mean of its divisors is an integer number (2005208625).

Almost surely, 2^22915023940 is an apocalyptic number.

22915023940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22915023940 is an abundant number, since it is smaller than the sum of its proper divisors (25209983060).

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

22915023940 is a wasteful number, since it uses less digits than its factorization.

22915023940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82311 (or 82309 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 22915023940 in words is "twenty-two billion, nine hundred fifteen million, twenty-three thousand, nine hundred forty".