80396740 has 24 divisors (see below), whose sum is σ = 178765272. Its totient is φ = 30266880.

The previous prime is 80396731. The next prime is 80396741. The reversal of 80396740 is 4769308.

It can be written as a sum of positive squares in 4 ways, for example, as 4393216 + 76003524 = 2096^2 + 8718^2 .

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 a self number, because there is not a number n which added to its sum of digits gives 80396740.

It is not an unprimeable number, because it can be changed into a prime (80396741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117891 + ... + 118570.

It is an arithmetic number, because the mean of its divisors is an integer number (7448553).

Almost surely, 2^80396740 is an apocalyptic number.

It is an amenable number.

80396740 is an abundant number, since it is smaller than the sum of its proper divisors (98368532).

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

80396740 is a wasteful number, since it uses less digits than its factorization.

80396740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236487 (or 236485 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 80396740 is about 8966.4229210985. The cubic root of 80396740 is about 431.5980557775.

The spelling of 80396740 in words is "eighty million, three hundred ninety-six thousand, seven hundred forty".