39172640028 has 24 divisors (see below), whose sum is σ = 91409106432. Its totient is φ = 13056649584.

The previous prime is 39172640027. The next prime is 39172640029. The reversal of 39172640028 is 82004627193.

It is an interprime number because it is at equal distance from previous prime (39172640027) and next prime (39172640029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39172640027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83451 + ... + 292077.

It is an arithmetic number, because the mean of its divisors is an integer number (3808712768).

Almost surely, 2^39172640028 is an apocalyptic number.

It is an amenable number.

39172640028 is an abundant number, since it is smaller than the sum of its proper divisors (52236466404).

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

39172640028 is a wasteful number, since it uses less digits than its factorization.

39172640028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224281 (or 224279 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 39172640028 in words is "thirty-nine billion, one hundred seventy-two million, six hundred forty thousand, twenty-eight".