21869004 has 24 divisors (see below), whose sum is σ = 54029808. Its totient is φ = 6860800.

The previous prime is 21868969. The next prime is 21869011. The reversal of 21869004 is 40096812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53397 + ... + 53804.

It is an arithmetic number, because the mean of its divisors is an integer number (2251242).

Almost surely, 2^21869004 is an apocalyptic number.

It is an amenable number.

21869004 is an abundant number, since it is smaller than the sum of its proper divisors (32160804).

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

21869004 is a wasteful number, since it uses less digits than its factorization.

21869004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107225 (or 107223 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 21869004 is about 4676.4306901739. The cubic root of 21869004 is about 279.6466801990.

The spelling of 21869004 in words is "twenty-one million, eight hundred sixty-nine thousand, four".