80967440 has 20 divisors (see below), whose sum is σ = 188249484. Its totient is φ = 32386944.

The previous prime is 80967437. The next prime is 80967451. The reversal of 80967440 is 4476908.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59474944 + 21492496 = 7712^2 + 4636^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 80967394 and 80967403.

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, 505967 + ... + 506126.

Almost surely, 2^80967440 is an apocalyptic number.

80967440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80967440 is an abundant number, since it is smaller than the sum of its proper divisors (107282044).

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

80967440 is a wasteful number, since it uses less digits than its factorization.

80967440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012106 (or 1012100 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 80967440 is about 8998.1909292924. The cubic root of 80967440 is about 432.6168884507.

The spelling of 80967440 in words is "eighty million, nine hundred sixty-seven thousand, four hundred forty".