21472675 has 12 divisors (see below), whose sum is σ = 30430096. Its totient is φ = 14724000.

The previous prime is 21472667. The next prime is 21472687. The reversal of 21472675 is 57627412.

It is not a de Polignac number, because 21472675 - 2³ = 21472667 is a prime.

It is a super-2 number, since 2×21472675² = 922151543311250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21472675.

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 11 ways as a sum of consecutive naturals, for example, 61176 + ... + 61525.

Almost surely, 2^21472675 is an apocalyptic number.

21472675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21472675 is a deficient number, since it is larger than the sum of its proper divisors (8957421).

21472675 is a wasteful number, since it uses less digits than its factorization.

21472675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122718 (or 122713 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 21472675 is about 4633.8617804160. The cubic root of 21472675 is about 277.9470380277.

The spelling of 21472675 in words is "twenty-one million, four hundred seventy-two thousand, six hundred seventy-five".