80045680 has 80 divisors (see below), whose sum is σ = 218673504. Its totient is φ = 26864640.

The previous prime is 80045677. The next prime is 80045699. The reversal of 80045680 is 8654008.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 7942 + ... + 14938.

Almost surely, 2^80045680 is an apocalyptic number.

80045680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80045680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109336752).

80045680 is an abundant number, since it is smaller than the sum of its proper divisors (138627824).

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

80045680 is a wasteful number, since it uses less digits than its factorization.

80045680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034 (or 7028 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 80045680 is about 8946.8251352086. The cubic root of 80045680 is about 430.9689345489.

Adding to 80045680 its reverse (8654008), we get a palindrome (88699688).

The spelling of 80045680 in words is "eighty million, forty-five thousand, six hundred eighty".