20423692 has 6 divisors (see below), whose sum is σ = 35741468. Its totient is φ = 10211844.

The previous prime is 20423653. The next prime is 20423707. The reversal of 20423692 is 29632402.

It is a self number, because there is not a number n which added to its sum of digits gives 20423692.

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 as a sum of consecutive naturals, namely, 2552958 + ... + 2552965.

Almost surely, 2^20423692 is an apocalyptic number.

It is an amenable number.

20423692 is a deficient number, since it is larger than the sum of its proper divisors (15317776).

20423692 is a wasteful number, since it uses less digits than its factorization.

20423692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105927 (or 5105925 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20423692 is about 4519.2579036829. The cubic root of 20423692 is about 273.3451782824.

It can be divided in two parts, 20423 and 692, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20423692 in words is "twenty million, four hundred twenty-three thousand, six hundred ninety-two".