80047764 has 60 divisors (see below), whose sum is σ = 221585364. Its totient is φ = 25111296.

The previous prime is 80047763. The next prime is 80047769. The reversal of 80047764 is 46774008.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54464400 + 25583364 = 7380^2 + 5058^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80047763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1759 + ... + 12774.

Almost surely, 2^80047764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80047764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110792682).

80047764 is an abundant number, since it is smaller than the sum of its proper divisors (141537600).

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

80047764 is a wasteful number, since it uses less digits than its factorization.

80047764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14566 (or 14555 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 80047764 is about 8946.9416003459. The cubic root of 80047764 is about 430.9726746277.

The spelling of 80047764 in words is "eighty million, forty-seven thousand, seven hundred sixty-four".