21532674 has 32 divisors (see below), whose sum is σ = 45515520. Its totient is φ = 6780032.

The previous prime is 21532663. The next prime is 21532697. The reversal of 21532674 is 47623512.

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, 6862 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (1422360).

Almost surely, 2^21532674 is an apocalyptic number.

21532674 is an abundant number, since it is smaller than the sum of its proper divisors (23982846).

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

21532674 is a wasteful number, since it uses less digits than its factorization.

21532674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714.

The product of its digits is 10080, while the sum is 30.

The square root of 21532674 is about 4640.3312381769. The cubic root of 21532674 is about 278.2056773737.

The spelling of 21532674 in words is "twenty-one million, five hundred thirty-two thousand, six hundred seventy-four".