80340840 has 192 divisors, whose sum is σ = 282147840. Its totient is φ = 19768320.

The previous prime is 80340829. The next prime is 80340881. The reversal of 80340840 is 4804308.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256524 + ... + 256836.

It is an arithmetic number, because the mean of its divisors is an integer number (1469520).

Almost surely, 2^80340840 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 80340840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141073920).

80340840 is an abundant number, since it is smaller than the sum of its proper divisors (201807000).

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

80340840 is a wasteful number, since it uses less digits than its factorization.

80340840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 377 counting only the distinct ones).

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

The square root of 80340840 is about 8963.3051939561. The cubic root of 80340840 is about 431.4980022796.

The spelling of 80340840 in words is "eighty million, three hundred forty thousand, eight hundred forty".