80127756 has 18 divisors (see below), whose sum is σ = 202545252. Its totient is φ = 26709240.

The previous prime is 80127743. The next prime is 80127767. The reversal of 80127756 is 65772108.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2225771 = 80127756 / (8 + 0 + 1 + 2 + 7 + 7 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 80127756.

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, 1112850 + ... + 1112921.

It is an arithmetic number, because the mean of its divisors is an integer number (11252514).

Almost surely, 2^80127756 is an apocalyptic number.

It is an amenable number.

80127756 is an abundant number, since it is smaller than the sum of its proper divisors (122417496).

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

80127756 is a wasteful number, since it uses less digits than its factorization.

80127756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225781 (or 2225776 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 80127756 is about 8951.4108385215. The cubic root of 80127756 is about 431.1161843166.

The spelling of 80127756 in words is "eighty million, one hundred twenty-seven thousand, seven hundred fifty-six".