20323724 has 12 divisors (see below), whose sum is σ = 36714048. Its totient is φ = 9834000.

The previous prime is 20323717. The next prime is 20323727. The reversal of 20323724 is 42732302.

It is a self number, because there is not a number n which added to its sum of digits gives 20323724.

It is not an unprimeable number, because it can be changed into a prime (20323727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81827 + ... + 82074.

It is an arithmetic number, because the mean of its divisors is an integer number (3059504).

Almost surely, 2^20323724 is an apocalyptic number.

It is an amenable number.

20323724 is a deficient number, since it is larger than the sum of its proper divisors (16390324).

20323724 is a wasteful number, since it uses less digits than its factorization.

20323724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163936 (or 163934 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20323724 is about 4508.1841133654. The cubic root of 20323724 is about 272.8984670756.

The spelling of 20323724 in words is "twenty million, three hundred twenty-three thousand, seven hundred twenty-four".