22782504924 has 18 divisors (see below), whose sum is σ = 57589109760. Its totient is φ = 7594168296.

The previous prime is 22782504923. The next prime is 22782504961. The reversal of 22782504924 is 42940528722.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×22782504924² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22782504924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22782504923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316423644 + ... + 316423715.

Almost surely, 2^22782504924 is an apocalyptic number.

It is an amenable number.

22782504924 is an abundant number, since it is smaller than the sum of its proper divisors (34806604836).

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

22782504924 is a wasteful number, since it uses less digits than its factorization.

22782504924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632847369 (or 632847364 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 22782504924 in words is "twenty-two billion, seven hundred eighty-two million, five hundred four thousand, nine hundred twenty-four".