80312788 has 12 divisors (see below), whose sum is σ = 141491700. Its totient is φ = 39886592.

The previous prime is 80312779. The next prime is 80312789. The reversal of 80312788 is 88721308.

It can be written as a sum of positive squares in 2 ways, for example, as 52243984 + 28068804 = 7228^2 + 5298^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80312789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66781 + ... + 67972.

It is an arithmetic number, because the mean of its divisors is an integer number (11790975).

Almost surely, 2^80312788 is an apocalyptic number.

It is an amenable number.

80312788 is a deficient number, since it is larger than the sum of its proper divisors (61178912).

80312788 is a wasteful number, since it uses less digits than its factorization.

80312788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134906 (or 134904 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 80312788 is about 8961.7402327896. The cubic root of 80312788 is about 431.4477754749.

The spelling of 80312788 in words is "eighty million, three hundred twelve thousand, seven hundred eighty-eight".