80320515 has 32 divisors (see below), whose sum is σ = 141336576. Its totient is φ = 38626560.

The previous prime is 80320507. The next prime is 80320523. The reversal of 80320515 is 51502308.

It is an interprime number because it is at equal distance from previous prime (80320507) and next prime (80320523).

It is not a de Polignac number, because 80320515 - 2³ = 80320507 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, 19039 + ... + 22871.

It is an arithmetic number, because the mean of its divisors is an integer number (4416768).

Almost surely, 2^80320515 is an apocalyptic number.

80320515 is a deficient number, since it is larger than the sum of its proper divisors (61016061).

80320515 is a wasteful number, since it uses less digits than its factorization.

80320515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 80320515 is about 8962.1713328858. The cubic root of 80320515 is about 431.4616117524.

The spelling of 80320515 in words is "eighty million, three hundred twenty thousand, five hundred fifteen".