20912724000 has 576 divisors, whose sum is σ = 87590909952. Its totient is φ = 4624128000.

The previous prime is 20912723989. The next prime is 20912724013. The reversal of 20912724000 is 42721902.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7810662 + ... + 7813338.

It is an arithmetic number, because the mean of its divisors is an integer number (152067552).

Almost surely, 2^20912724000 is an apocalyptic number.

20912724000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20912724000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43795454976).

20912724000 is an abundant number, since it is smaller than the sum of its proper divisors (66678185952).

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

20912724000 is a wasteful number, since it uses less digits than its factorization.

20912724000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 20912724000 in words is "twenty billion, nine hundred twelve million, seven hundred twenty-four thousand".