80881128 has 24 divisors (see below), whose sum is σ = 219053250. Its totient is φ = 26960352.

The previous prime is 80881111. The next prime is 80881147. The reversal of 80881128 is 82118808.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62062884 + 18818244 = 7878^2 + 4338^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80881092 and 80881101.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561603 + ... + 561746.

Almost surely, 2^80881128 is an apocalyptic number.

It is an amenable number.

80881128 is an abundant number, since it is smaller than the sum of its proper divisors (138172122).

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

80881128 is a wasteful number, since it uses less digits than its factorization.

80881128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123361 (or 1123354 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 80881128 is about 8993.3935752863. The cubic root of 80881128 is about 432.4631093308.

It can be divided in two parts, 8088 and 1128, that added together give a square (9216 = 96²).

The spelling of 80881128 in words is "eighty million, eight hundred eighty-one thousand, one hundred twenty-eight".