80436772 has 12 divisors (see below), whose sum is σ = 151592476. Its totient is φ = 37124640.

The previous prime is 80436757. The next prime is 80436781. The reversal of 80436772 is 27763408.

It can be written as a sum of positive squares in 2 ways, for example, as 30536676 + 49900096 = 5526^2 + 7064^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 773379 + ... + 773482.

Almost surely, 2^80436772 is an apocalyptic number.

It is an amenable number.

80436772 is a deficient number, since it is larger than the sum of its proper divisors (71155704).

80436772 is a wasteful number, since it uses less digits than its factorization.

80436772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546878 (or 1546876 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 80436772 is about 8968.6549716220. The cubic root of 80436772 is about 431.6696791894.

The spelling of 80436772 in words is "eighty million, four hundred thirty-six thousand, seven hundred seventy-two".