20744070720 has 112 divisors (see below), whose sum is σ = 67642605888. Its totient is φ = 5382236160.

The previous prime is 20744070709. The next prime is 20744070751. The reversal of 20744070720 is 2707044702.

It is a super-2 number, since 2×20744070720² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256486 + ... + 327525.

Almost surely, 2^20744070720 is an apocalyptic number.

20744070720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20744070720 is an abundant number, since it is smaller than the sum of its proper divisors (46898535168).

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

20744070720 is a wasteful number, since it uses less digits than its factorization.

20744070720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584068 (or 584058 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The spelling of 20744070720 in words is "twenty billion, seven hundred forty-four million, seventy thousand, seven hundred twenty".