80776140 has 48 divisors (see below), whose sum is σ = 226672992. Its totient is φ = 21492736.

The previous prime is 80776123. The next prime is 80776141. The reversal of 80776140 is 4167708.

It is not an unprimeable number, because it can be changed into a prime (80776141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32212 + ... + 34628.

It is an arithmetic number, because the mean of its divisors is an integer number (4722354).

Almost surely, 2^80776140 is an apocalyptic number.

It is an amenable number.

80776140 is an abundant number, since it is smaller than the sum of its proper divisors (145896852).

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

80776140 is a wasteful number, since it uses less digits than its factorization.

80776140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 80776140 is about 8987.5547286234. The cubic root of 80776140 is about 432.2759082799.

The spelling of 80776140 in words is "eighty million, seven hundred seventy-six thousand, one hundred forty".