20423884 has 12 divisors (see below), whose sum is σ = 38491264. Its totient is φ = 9426384.

The previous prime is 20423873. The next prime is 20423891. The reversal of 20423884 is 48832402.

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 3 ways as a sum of consecutive naturals, for example, 196332 + ... + 196435.

Almost surely, 2^20423884 is an apocalyptic number.

It is an amenable number.

20423884 is a deficient number, since it is larger than the sum of its proper divisors (18067380).

20423884 is a wasteful number, since it uses less digits than its factorization.

20423884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392784 (or 392782 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 20423884 is about 4519.2791460586. The cubic root of 20423884 is about 273.3460348384.

The spelling of 20423884 in words is "twenty million, four hundred twenty-three thousand, eight hundred eighty-four".