28976579216 has 20 divisors (see below), whose sum is σ = 60460747452. Its totient is φ = 13373805696.

The previous prime is 28976579197. The next prime is 28976579239. The reversal of 28976579216 is 61297567982.

It can be written as a sum of positive squares in 2 ways, for example, as 1705359616 + 27271219600 = 41296^2 + 165140^2 .

It is a super-2 number, since 2×28976579216² (a number of 22 digits) contains 22 as substring.

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, 69655031 + ... + 69655446.

Almost surely, 2^28976579216 is an apocalyptic number.

28976579216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28976579216 is an abundant number, since it is smaller than the sum of its proper divisors (31484168236).

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

28976579216 is a wasteful number, since it uses less digits than its factorization.

28976579216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139310498 (or 139310492 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 62.

The spelling of 28976579216 in words is "twenty-eight billion, nine hundred seventy-six million, five hundred seventy-nine thousand, two hundred sixteen".