39413028728 has 8 divisors (see below), whose sum is σ = 73899428880. Its totient is φ = 19706514360.

The previous prime is 39413028659. The next prime is 39413028731. The reversal of 39413028728 is 82782031493.

It is a happy number.

39413028728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2463314288 + ... + 2463314303.

It is an arithmetic number, because the mean of its divisors is an integer number (9237428610).

Almost surely, 2^39413028728 is an apocalyptic number.

It is an amenable number.

39413028728 is a deficient number, since it is larger than the sum of its proper divisors (34486400152).

39413028728 is a wasteful number, since it uses less digits than its factorization.

39413028728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926628597 (or 4926628593 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 39413028728 in words is "thirty-nine billion, four hundred thirteen million, twenty-eight thousand, seven hundred twenty-eight".