21795364 has 12 divisors (see below), whose sum is σ = 38191104. Its totient is φ = 10883624.

The previous prime is 21795353. The next prime is 21795373. The reversal of 21795364 is 46359712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477 + ... + 6619.

It is an arithmetic number, because the mean of its divisors is an integer number (3182592).

Almost surely, 2^21795364 is an apocalyptic number.

It is an amenable number.

21795364 is a deficient number, since it is larger than the sum of its proper divisors (16395740).

21795364 is a wasteful number, since it uses less digits than its factorization.

21795364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034 (or 7032 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 21795364 is about 4668.5505245204. The cubic root of 21795364 is about 279.3324403202.

The spelling of 21795364 in words is "twenty-one million, seven hundred ninety-five thousand, three hundred sixty-four".