80044040 has 16 divisors (see below), whose sum is σ = 180099180. Its totient is φ = 32017600.

The previous prime is 80044033. The next prime is 80044057. The reversal of 80044040 is 4044008.

It can be written as a sum of positive squares in 2 ways, for example, as 71944324 + 8099716 = 8482^2 + 2846^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000511 + ... + 1000590.

Almost surely, 2^80044040 is an apocalyptic number.

It is an amenable number.

80044040 is an abundant number, since it is smaller than the sum of its proper divisors (100055140).

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

80044040 is a wasteful number, since it uses less digits than its factorization.

80044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001112 (or 2001108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 80044040 is about 8946.7334821151. The cubic root of 80044040 is about 430.9659912550.

Adding to 80044040 its reverse (4044008), we get a palindrome (84088048).

The spelling of 80044040 in words is "eighty million, forty-four thousand, forty".