80378644 has 12 divisors (see below), whose sum is σ = 140763168. Its totient is φ = 40160600.

The previous prime is 80378563. The next prime is 80378651. The reversal of 80378644 is 44687308.

It is a super-2 number, since 2×80378644² = 12921452822557472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80378597 and 80378606.

It is a congruent number.

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, 112 + ... + 12679.

It is an arithmetic number, because the mean of its divisors is an integer number (11730264).

Almost surely, 2^80378644 is an apocalyptic number.

It is an amenable number.

80378644 is a deficient number, since it is larger than the sum of its proper divisors (60384524).

80378644 is a wasteful number, since it uses less digits than its factorization.

80378644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14366 (or 14364 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 80378644 is about 8965.4137662464. The cubic root of 80378644 is about 431.5656714442.

The spelling of 80378644 in words is "eighty million, three hundred seventy-eight thousand, six hundred forty-four".