80405744 has 20 divisors (see below), whose sum is σ = 155931240. Its totient is φ = 40165440.

The previous prime is 80405707. The next prime is 80405753. The reversal of 80405744 is 44750408.

It is a self number, because there is not a number n which added to its sum of digits gives 80405744.

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, 25199 + ... + 28209.

It is an arithmetic number, because the mean of its divisors is an integer number (7796562).

Almost surely, 2^80405744 is an apocalyptic number.

It is an amenable number.

80405744 is a deficient number, since it is larger than the sum of its proper divisors (75525496).

80405744 is a wasteful number, since it uses less digits than its factorization.

80405744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 80405744 is about 8966.9250024744. The cubic root of 80405744 is about 431.6141673919.

The spelling of 80405744 in words is "eighty million, four hundred five thousand, seven hundred forty-four".