21794495 has 4 divisors (see below), whose sum is σ = 26153400. Its totient is φ = 17435592.

The previous prime is 21794489. The next prime is 21794533. The reversal of 21794495 is 59449712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21794495 - 2⁶ = 21794431 is a prime.

It is a congruent number.

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, 2179445 + ... + 2179454.

It is an arithmetic number, because the mean of its divisors is an integer number (6538350).

Almost surely, 2^21794495 is an apocalyptic number.

21794495 is a deficient number, since it is larger than the sum of its proper divisors (4358905).

21794495 is an equidigital number, since it uses as much as digits as its factorization.

21794495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358904.

The product of its digits is 90720, while the sum is 41.

The square root of 21794495 is about 4668.4574540205. The cubic root of 21794495 is about 279.3287278623.

The spelling of 21794495 in words is "twenty-one million, seven hundred ninety-four thousand, four hundred ninety-five".