80442765 has 48 divisors (see below), whose sum is σ = 151132800. Its totient is φ = 39346560.

The previous prime is 80442757. The next prime is 80442767. The reversal of 80442765 is 56724408.

It is not a de Polignac number, because 80442765 - 2³ = 80442757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80442767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116070 + ... + 116760.

It is an arithmetic number, because the mean of its divisors is an integer number (3148600).

Almost surely, 2^80442765 is an apocalyptic number.

It is an amenable number.

80442765 is a deficient number, since it is larger than the sum of its proper divisors (70690035).

80442765 is a wasteful number, since it uses less digits than its factorization.

80442765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 80442765 is about 8968.9890734686. The cubic root of 80442765 is about 431.6803995439.

The spelling of 80442765 in words is "eighty million, four hundred forty-two thousand, seven hundred sixty-five".