20423600 has 30 divisors (see below), whose sum is σ = 49068660. Its totient is φ = 8169280.

The previous prime is 20423591. The next prime is 20423621. The reversal of 20423600 is 632402.

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 5 ways as a sum of consecutive naturals, for example, 25130 + ... + 25929.

It is an arithmetic number, because the mean of its divisors is an integer number (1635622).

Almost surely, 2^20423600 is an apocalyptic number.

20423600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423600 is an abundant number, since it is smaller than the sum of its proper divisors (28645060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423600 is a wasteful number, since it uses less digits than its factorization.

20423600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51077 (or 51066 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20423600 is about 4519.2477250091. The cubic root of 20423600 is about 273.3447678474.

The spelling of 20423600 in words is "twenty million, four hundred twenty-three thousand, six hundred".