21482004 has 24 divisors (see below), whose sum is σ = 50948128. Its totient is φ = 7043040.

The previous prime is 21481963. The next prime is 21482029. The reversal of 21482004 is 40028412.

It is a super-2 number, since 2×21482004² = 922952991712032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13942 + ... + 15405.

Almost surely, 2^21482004 is an apocalyptic number.

It is an amenable number.

21482004 is an abundant number, since it is smaller than the sum of its proper divisors (29466124).

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

21482004 is a wasteful number, since it uses less digits than its factorization.

21482004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29415 (or 29413 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 21482004 is about 4634.8682829181. The cubic root of 21482004 is about 277.9872844106.

The spelling of 21482004 in words is "twenty-one million, four hundred eighty-two thousand, four".