20612884 has 24 divisors (see below), whose sum is σ = 37312128. Its totient is φ = 9958080.

The previous prime is 20612869. The next prime is 20612903. The reversal of 20612884 is 48821602.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14944 + ... + 16264.

It is an arithmetic number, because the mean of its divisors is an integer number (1554672).

Almost surely, 2^20612884 is an apocalyptic number.

It is an amenable number.

20612884 is a deficient number, since it is larger than the sum of its proper divisors (16699244).

20612884 is a wasteful number, since it uses less digits than its factorization.

20612884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20612884 is about 4540.1414074894. The cubic root of 20612884 is about 274.1866169687.

The spelling of 20612884 in words is "twenty million, six hundred twelve thousand, eight hundred eighty-four".