28990576515 has 32 divisors (see below), whose sum is σ = 47651872320. Its totient is φ = 15039558144.

The previous prime is 28990576507. The next prime is 28990576543. The reversal of 28990576515 is 51567509982.

It is a happy number.

It is not a de Polignac number, because 28990576515 - 2³ = 28990576507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3501801 + ... + 3510069.

It is an arithmetic number, because the mean of its divisors is an integer number (1489121010).

Almost surely, 2^28990576515 is an apocalyptic number.

28990576515 is a deficient number, since it is larger than the sum of its proper divisors (18661295805).

28990576515 is a wasteful number, since it uses less digits than its factorization.

28990576515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14631.

The product of its (nonzero) digits is 6804000, while the sum is 57.

The spelling of 28990576515 in words is "twenty-eight billion, nine hundred ninety million, five hundred seventy-six thousand, five hundred fifteen".