80565240 has 64 divisors (see below), whose sum is σ = 276226560. Its totient is φ = 18414720.

The previous prime is 80565223. The next prime is 80565253. The reversal of 80565240 is 4256508.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80565198 and 80565207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47116 + ... + 48795.

It is an arithmetic number, because the mean of its divisors is an integer number (4316040).

Almost surely, 2^80565240 is an apocalyptic number.

It is an amenable number.

80565240 is an abundant number, since it is smaller than the sum of its proper divisors (195661320).

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

80565240 is a wasteful number, since it uses less digits than its factorization.

80565240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95932 (or 95928 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 80565240 is about 8975.8141691994. The cubic root of 80565240 is about 431.8993678495.

The spelling of 80565240 in words is "eighty million, five hundred sixty-five thousand, two hundred forty".