20604872 has 32 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 9757440.

The previous prime is 20604827. The next prime is 20604917. The reversal of 20604872 is 27840602.

It is an interprime number because it is at equal distance from previous prime (20604827) and next prime (20604917).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20297 + ... + 21287.

It is an arithmetic number, because the mean of its divisors is an integer number (1272240).

Almost surely, 2^20604872 is an apocalyptic number.

It is an amenable number.

20604872 is a deficient number, since it is larger than the sum of its proper divisors (20106808).

20604872 is a wasteful number, since it uses less digits than its factorization.

20604872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20604872 is about 4539.2589703607. The cubic root of 20604872 is about 274.1510879300.

The spelling of 20604872 in words is "twenty million, six hundred four thousand, eight hundred seventy-two".