80440308 has 36 divisors (see below), whose sum is σ = 218977668. Its totient is φ = 24750720.

The previous prime is 80440307. The next prime is 80440313. The reversal of 80440308 is 80304408.

It can be written as a sum of positive squares in 2 ways, for example, as 34715664 + 45724644 = 5892^2 + 6762^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×80440308² = 12941286302269728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85473 + ... + 86408.

It is an arithmetic number, because the mean of its divisors is an integer number (6082713).

Almost surely, 2^80440308 is an apocalyptic number.

It is an amenable number.

80440308 is an abundant number, since it is smaller than the sum of its proper divisors (138537360).

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

80440308 is a wasteful number, since it uses less digits than its factorization.

80440308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171904 (or 171899 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 80440308 is about 8968.8521004641. The cubic root of 80440308 is about 431.6760044955.

The spelling of 80440308 in words is "eighty million, four hundred forty thousand, three hundred eight".