80752780 has 24 divisors (see below), whose sum is σ = 173718720. Its totient is φ = 31512960.

The previous prime is 80752757. The next prime is 80752781. The reversal of 80752780 is 8725708.

It is a super-2 number, since 2×80752780² = 13042022955456800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80752781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48420 + ... + 50059.

It is an arithmetic number, because the mean of its divisors is an integer number (7238280).

Almost surely, 2^80752780 is an apocalyptic number.

It is an amenable number.

80752780 is an abundant number, since it is smaller than the sum of its proper divisors (92965940).

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

80752780 is a wasteful number, since it uses less digits than its factorization.

80752780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98529 (or 98527 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 80752780 is about 8986.2550598122. The cubic root of 80752780 is about 432.2342336848.

The spelling of 80752780 in words is "eighty million, seven hundred fifty-two thousand, seven hundred eighty".