21794634 has 24 divisors (see below), whose sum is σ = 49707840. Its totient is φ = 6882408.

The previous prime is 21794627. The next prime is 21794671. The reversal of 21794634 is 43649712.

21794634 is a `hidden beast` number, since 2 + 17 + 9 + 4 + 634 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31522 + ... + 32205.

It is an arithmetic number, because the mean of its divisors is an integer number (2071160).

Almost surely, 2^21794634 is an apocalyptic number.

21794634 is an abundant number, since it is smaller than the sum of its proper divisors (27913206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21794634 is a wasteful number, since it uses less digits than its factorization.

21794634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63754 (or 63751 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 21794634 is about 4668.4723411412. The cubic root of 21794634 is about 279.3293216913.

The spelling of 21794634 in words is "twenty-one million, seven hundred ninety-four thousand, six hundred thirty-four".