21795367 has 24 divisors (see below), whose sum is σ = 25280640. Its totient is φ = 18757200.

The previous prime is 21795353. The next prime is 21795373. The reversal of 21795367 is 76359712.

It is not a de Polignac number, because 21795367 - 2¹¹ = 21793319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21795307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306942 + ... + 307012.

It is an arithmetic number, because the mean of its divisors is an integer number (1053360).

Almost surely, 2^21795367 is an apocalyptic number.

21795367 is a deficient number, since it is larger than the sum of its proper divisors (3485273).

21795367 is a wasteful number, since it uses less digits than its factorization.

21795367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 184 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 21795367 is about 4668.5508458193. The cubic root of 21795367 is about 279.3324531363.

The spelling of 21795367 in words is "twenty-one million, seven hundred ninety-five thousand, three hundred sixty-seven".