21472674 has 32 divisors (see below), whose sum is σ = 44064000. Its totient is φ = 6973824.

The previous prime is 21472667. The next prime is 21472687. The reversal of 21472674 is 47627412.

It is a super-2 number, since 2×21472674² = 922151457420552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41932 + ... + 42440.

It is an arithmetic number, because the mean of its divisors is an integer number (1377000).

Almost surely, 2^21472674 is an apocalyptic number.

21472674 is an abundant number, since it is smaller than the sum of its proper divisors (22591326).

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

21472674 is a wasteful number, since it uses less digits than its factorization.

21472674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its digits is 18816, while the sum is 33.

The square root of 21472674 is about 4633.8616725146. The cubic root of 21472674 is about 277.9470337130.

The spelling of 21472674 in words is "twenty-one million, four hundred seventy-two thousand, six hundred seventy-four".