28310418538 has 16 divisors (see below), whose sum is σ = 42616817064. Its totient is φ = 14104849600.

The previous prime is 28310418511. The next prime is 28310418553. The reversal of 28310418538 is 83581401382.

It can be written as a sum of positive squares in 4 ways, for example, as 7030319409 + 21280099129 = 83847^2 + 145877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28310418494 and 28310418503.

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, 1867188 + ... + 1882288.

Almost surely, 2^28310418538 is an apocalyptic number.

28310418538 is a deficient number, since it is larger than the sum of its proper divisors (14306398526).

28310418538 is a wasteful number, since it uses less digits than its factorization.

28310418538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18377.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 28310418538 in words is "twenty-eight billion, three hundred ten million, four hundred eighteen thousand, five hundred thirty-eight".