20634604 has 12 divisors (see below), whose sum is σ = 37086784. Its totient is φ = 10038384.

The previous prime is 20634571. The next prime is 20634613. The reversal of 20634604 is 40643602.

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, 69564 + ... + 69859.

Almost surely, 2^20634604 is an apocalyptic number.

It is an amenable number.

20634604 is a deficient number, since it is larger than the sum of its proper divisors (16452180).

20634604 is a wasteful number, since it uses less digits than its factorization.

20634604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139464 (or 139462 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20634604 is about 4542.5327736847. The cubic root of 20634604 is about 274.2828875473.

The spelling of 20634604 in words is "twenty million, six hundred thirty-four thousand, six hundred four".