21876468 has 24 divisors (see below), whose sum is σ = 51307200. Its totient is φ = 7254720.

The previous prime is 21876457. The next prime is 21876511. The reversal of 21876468 is 86467812.

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, 2193 + ... + 6968.

It is an arithmetic number, because the mean of its divisors is an integer number (2137800).

Almost surely, 2^21876468 is an apocalyptic number.

It is an amenable number.

21876468 is an abundant number, since it is smaller than the sum of its proper divisors (29430732).

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

21876468 is a wasteful number, since it uses less digits than its factorization.

21876468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9367 (or 9365 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 21876468 is about 4677.2286666358. The cubic root of 21876468 is about 279.6784915151.

The spelling of 21876468 in words is "twenty-one million, eight hundred seventy-six thousand, four hundred sixty-eight".