80699280 has 40 divisors (see below), whose sum is σ = 250168512. Its totient is φ = 21519744.

The previous prime is 80699209. The next prime is 80699291. The reversal of 80699280 is 8299608.

It is a tau number, because it is divible by the number of its divisors (40).

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, 167884 + ... + 168363.

Almost surely, 2^80699280 is an apocalyptic number.

80699280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80699280 is an abundant number, since it is smaller than the sum of its proper divisors (169469232).

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

80699280 is a wasteful number, since it uses less digits than its factorization.

80699280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336263 (or 336257 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 80699280 is about 8983.2777982204. The cubic root of 80699280 is about 432.1387585809.

The spelling of 80699280 in words is "eighty million, six hundred ninety-nine thousand, two hundred eighty".