80639340 has 48 divisors (see below), whose sum is σ = 228342240. Its totient is φ = 21260800.

The previous prime is 80639327. The next prime is 80639353. The reversal of 80639340 is 4393608.

It is an interprime number because it is at equal distance from previous prime (80639327) and next prime (80639353).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2211 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (4757130).

Almost surely, 2^80639340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80639340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114171120).

80639340 is an abundant number, since it is smaller than the sum of its proper divisors (147702900).

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

80639340 is a wasteful number, since it uses less digits than its factorization.

80639340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15202 (or 15200 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 80639340 is about 8979.9409797615. The cubic root of 80639340 is about 432.0317406377.

The spelling of 80639340 in words is "eighty million, six hundred thirty-nine thousand, three hundred forty".