21460604 has 12 divisors (see below), whose sum is σ = 40970328. Its totient is φ = 9754800.

The previous prime is 21460603. The next prime is 21460643. The reversal of 21460604 is 40606412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21460604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21460603) 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, 243827 + ... + 243914.

It is an arithmetic number, because the mean of its divisors is an integer number (3414194).

Almost surely, 2^21460604 is an apocalyptic number.

It is an amenable number.

21460604 is a deficient number, since it is larger than the sum of its proper divisors (19509724).

21460604 is a wasteful number, since it uses less digits than its factorization.

21460604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487756 (or 487754 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 21460604 is about 4632.5591199681. The cubic root of 21460604 is about 277.8949450368.

The spelling of 21460604 in words is "twenty-one million, four hundred sixty thousand, six hundred four".