21892934 has 32 divisors (see below), whose sum is σ = 39384576. Its totient is φ = 8930880.

The previous prime is 21892907. The next prime is 21892939. The reversal of 21892934 is 43929812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21892939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24239 + ... + 25125.

It is an arithmetic number, because the mean of its divisors is an integer number (1230768).

Almost surely, 2^21892934 is an apocalyptic number.

21892934 is a deficient number, since it is larger than the sum of its proper divisors (17491642).

21892934 is a wasteful number, since it uses less digits than its factorization.

21892934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980.

The product of its digits is 31104, while the sum is 38.

The square root of 21892934 is about 4678.9885659189. The cubic root of 21892934 is about 279.7486434719.

The spelling of 21892934 in words is "twenty-one million, eight hundred ninety-two thousand, nine hundred thirty-four".