21884074 has 16 divisors (see below), whose sum is σ = 33444576. Its totient is φ = 10738000.

The previous prime is 21884041. The next prime is 21884081. The reversal of 21884074 is 47048812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26049 + ... + 26875.

It is an arithmetic number, because the mean of its divisors is an integer number (2090286).

Almost surely, 2^21884074 is an apocalyptic number.

21884074 is a deficient number, since it is larger than the sum of its proper divisors (11560502).

21884074 is a wasteful number, since it uses less digits than its factorization.

21884074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 21884074 is about 4678.0416842948. The cubic root of 21884074 is about 279.7109005878.

The spelling of 21884074 in words is "twenty-one million, eight hundred eighty-four thousand, seventy-four".