80716440 has 128 divisors (see below), whose sum is σ = 278530560. Its totient is φ = 18330624.

The previous prime is 80716439. The next prime is 80716451. The reversal of 80716440 is 4461708.

It is a super-3 number, since 3×80716440³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80716398 and 80716407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257724 + ... + 258036.

It is an arithmetic number, because the mean of its divisors is an integer number (2176020).

Almost surely, 2^80716440 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 80716440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139265280).

80716440 is an abundant number, since it is smaller than the sum of its proper divisors (197814120).

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

80716440 is a wasteful number, since it uses less digits than its factorization.

80716440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 80716440 is about 8984.2328553973. The cubic root of 80716440 is about 432.1693865929.

The spelling of 80716440 in words is "eighty million, seven hundred sixteen thousand, four hundred forty".