39728147392 has 28 divisors (see below), whose sum is σ = 78885110200. Its totient is φ = 19851584256.

The previous prime is 39728147363. The next prime is 39728147423. The reversal of 39728147392 is 29374182793.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92142 + ... + 296557.

Almost surely, 2^39728147392 is an apocalyptic number.

39728147392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39728147392 is a deficient number, since it is larger than the sum of its proper divisors (39156962808).

39728147392 is a wasteful number, since it uses less digits than its factorization.

39728147392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390308 (or 390298 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 55.

The spelling of 39728147392 in words is "thirty-nine billion, seven hundred twenty-eight million, one hundred forty-seven thousand, three hundred ninety-two".