28398476156 has 24 divisors (see below), whose sum is σ = 51401374080. Its totient is φ = 13714171200.

The previous prime is 28398476147. The next prime is 28398476203. The reversal of 28398476156 is 65167489382.

It is a junction number, because it is equal to n+sod(n) for n = 28398476095 and 28398476104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161855 + ... + 288086.

It is an arithmetic number, because the mean of its divisors is an integer number (2141723920).

Almost surely, 2^28398476156 is an apocalyptic number.

It is an amenable number.

28398476156 is a deficient number, since it is larger than the sum of its proper divisors (23002897924).

28398476156 is a wasteful number, since it uses less digits than its factorization.

28398476156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450485 (or 450483 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The spelling of 28398476156 in words is "twenty-eight billion, three hundred ninety-eight million, four hundred seventy-six thousand, one hundred fifty-six".