21860022936 has 16 divisors (see below), whose sum is σ = 54650057400. Its totient is φ = 7286674304.

The previous prime is 21860022901. The next prime is 21860022949. The reversal of 21860022936 is 63922006812.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21860022894 and 21860022903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455417121 + ... + 455417168.

Almost surely, 2^21860022936 is an apocalyptic number.

It is an amenable number.

21860022936 is an abundant number, since it is smaller than the sum of its proper divisors (32790034464).

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

21860022936 is a wasteful number, since it uses less digits than its factorization.

21860022936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910834298 (or 910834294 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 21860022936 in words is "twenty-one billion, eight hundred sixty million, twenty-two thousand, nine hundred thirty-six".