22742879840 has 48 divisors (see below), whose sum is σ = 53741484720. Its totient is φ = 9095216640.

The previous prime is 22742879813. The next prime is 22742879843. The reversal of 22742879840 is 4897824722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742879843) 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, 919151 + ... + 943569.

It is an arithmetic number, because the mean of its divisors is an integer number (1119614265).

Almost surely, 2^22742879840 is an apocalyptic number.

22742879840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22742879840 is an abundant number, since it is smaller than the sum of its proper divisors (30998604880).

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

22742879840 is a wasteful number, since it uses less digits than its factorization.

22742879840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30255 (or 30247 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 22742879840 in words is "twenty-two billion, seven hundred forty-two million, eight hundred seventy-nine thousand, eight hundred forty".