80815340 has 24 divisors (see below), whose sum is σ = 171218880. Its totient is φ = 32039168.

The previous prime is 80815337. The next prime is 80815349. The reversal of 80815340 is 4351808.

It is a super-2 number, since 2×80815340² = 13062238358631200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80815349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15620 + ... + 20139.

It is an arithmetic number, because the mean of its divisors is an integer number (7134120).

Almost surely, 2^80815340 is an apocalyptic number.

It is an amenable number.

80815340 is an abundant number, since it is smaller than the sum of its proper divisors (90403540).

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

80815340 is a wasteful number, since it uses less digits than its factorization.

80815340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35881 (or 35879 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80815340 is about 8989.7352575034. The cubic root of 80815340 is about 432.3458236255.

The spelling of 80815340 in words is "eighty million, eight hundred fifteen thousand, three hundred forty".