21468604 has 12 divisors (see below), whose sum is σ = 38279304. Its totient is φ = 10531664.

The previous prime is 21468593. The next prime is 21468607. The reversal of 21468604 is 40686412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21468607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50422 + ... + 50845.

It is an arithmetic number, because the mean of its divisors is an integer number (3189942).

Almost surely, 2^21468604 is an apocalyptic number.

It is an amenable number.

21468604 is a deficient number, since it is larger than the sum of its proper divisors (16810700).

21468604 is a wasteful number, since it uses less digits than its factorization.

21468604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101324 (or 101322 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 21468604 is about 4633.4224931469. The cubic root of 21468604 is about 277.9294716104.

The spelling of 21468604 in words is "twenty-one million, four hundred sixty-eight thousand, six hundred four".