39720894720 has 432 divisors, whose sum is σ = 139003708032. Its totient is φ = 9661317120.

The previous prime is 39720894659. The next prime is 39720894743. The reversal of 39720894720 is 2749802793.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62948805 + ... + 62949435.

Almost surely, 2^39720894720 is an apocalyptic number.

39720894720 is a gapful number since it is divisible by the number (30) 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 39720894720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69501854016).

39720894720 is an abundant number, since it is smaller than the sum of its proper divisors (99282813312).

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

39720894720 is a wasteful number, since it uses less digits than its factorization.

39720894720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 39720894720 in words is "thirty-nine billion, seven hundred twenty million, eight hundred ninety-four thousand, seven hundred twenty".