20823712 has 48 divisors (see below), whose sum is σ = 50464512. Its totient is φ = 8236800.

The previous prime is 20823703. The next prime is 20823721. The reversal of 20823712 is 21732802.

It is an interprime number because it is at equal distance from previous prime (20823703) and next prime (20823721).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (1051344).

Almost surely, 2^20823712 is an apocalyptic number.

It is an amenable number.

20823712 is an abundant number, since it is smaller than the sum of its proper divisors (29640800).

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

20823712 is a wasteful number, since it uses less digits than its factorization.

20823712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7181 (or 7173 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20823712 is about 4563.3005599018. The cubic root of 20823712 is about 275.1182389619.

The spelling of 20823712 in words is "twenty million, eight hundred twenty-three thousand, seven hundred twelve".