39728870688 has 96 divisors (see below), whose sum is σ = 112644919296. Its totient is φ = 12187865088.

The previous prime is 39728870683. The next prime is 39728870693. The reversal of 39728870688 is 88607882793.

It is an interprime number because it is at equal distance from previous prime (39728870683) and next prime (39728870693).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×39728870688² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39728870683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373345 + ... + 467807.

It is an arithmetic number, because the mean of its divisors is an integer number (1173384576).

Almost surely, 2^39728870688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39728870688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56322459648).

39728870688 is an abundant number, since it is smaller than the sum of its proper divisors (72916048608).

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

39728870688 is a wasteful number, since it uses less digits than its factorization.

39728870688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94826 (or 94818 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 39728870688 in words is "thirty-nine billion, seven hundred twenty-eight million, eight hundred seventy thousand, six hundred eighty-eight".