22813544920 has 32 divisors (see below), whose sum is σ = 51352895520. Its totient is φ = 9121432320.

The previous prime is 22813544917. The next prime is 22813544947. The reversal of 22813544920 is 2944531822.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30957 + ... + 215836.

It is an arithmetic number, because the mean of its divisors is an integer number (1604777985).

Almost surely, 2^22813544920 is an apocalyptic number.

22813544920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22813544920 is an abundant number, since it is smaller than the sum of its proper divisors (28539350600).

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

22813544920 is a wasteful number, since it uses less digits than its factorization.

22813544920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249115 (or 249111 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 22813544920 in words is "twenty-two billion, eight hundred thirteen million, five hundred forty-four thousand, nine hundred twenty".