28639376902 has 8 divisors (see below), whose sum is σ = 43663312512. Its totient is φ = 14084939400.

The previous prime is 28639376897. The next prime is 28639376947. The reversal of 28639376902 is 20967393682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28639376902² (a number of 22 digits) contains 22 as substring.

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, 117374374 + ... + 117374617.

It is an arithmetic number, because the mean of its divisors is an integer number (5457914064).

Almost surely, 2^28639376902 is an apocalyptic number.

28639376902 is a deficient number, since it is larger than the sum of its proper divisors (15023935610).

28639376902 is a wasteful number, since it uses less digits than its factorization.

28639376902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234749054.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 28639376902 in words is "twenty-eight billion, six hundred thirty-nine million, three hundred seventy-six thousand, nine hundred two".