39490632720 has 480 divisors, whose sum is σ = 168733843200. Its totient is φ = 8205281280.

The previous prime is 39490632679. The next prime is 39490632737. The reversal of 39490632720 is 2723609493.

39490632720 is a `hidden beast` number, since 3 + 9 + 4 + 9 + 0 + 632 + 7 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 2709292 + ... + 2723828.

It is an arithmetic number, because the mean of its divisors is an integer number (351528840).

Almost surely, 2^39490632720 is an apocalyptic number.

39490632720 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 39490632720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84366921600).

39490632720 is an abundant number, since it is smaller than the sum of its proper divisors (129243210480).

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

39490632720 is a wasteful number, since it uses less digits than its factorization.

39490632720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588 (or 14565 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 39490632720 in words is "thirty-nine billion, four hundred ninety million, six hundred thirty-two thousand, seven hundred twenty".