28369839942 has 24 divisors (see below), whose sum is σ = 62246065440. Its totient is φ = 9336908880.

The previous prime is 28369839931. The next prime is 28369839959. The reversal of 28369839942 is 24993896382.

It is a self number, because there is not a number n which added to its sum of digits gives 28369839942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9973909 + ... + 9976752.

It is an arithmetic number, because the mean of its divisors is an integer number (2593586060).

Almost surely, 2^28369839942 is an apocalyptic number.

28369839942 is an abundant number, since it is smaller than the sum of its proper divisors (33876225498).

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

28369839942 is a wasteful number, since it uses less digits than its factorization.

28369839942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19950748 (or 19950745 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 28369839942 in words is "twenty-eight billion, three hundred sixty-nine million, eight hundred thirty-nine thousand, nine hundred forty-two".