728580 has 24 divisors (see below), whose sum is σ = 2040192. Its totient is φ = 194272.

The previous prime is 728579. The next prime is 728627. The reversal of 728580 is 85827.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6012 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (85008).

2⁷²⁸⁵⁸⁰ is an apocalyptic number.

It is an amenable number.

728580 is an abundant number, since it is smaller than the sum of its proper divisors (1311612).

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

728580 is a wasteful number, since it uses less digits than its factorization.

728580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155 (or 12153 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 728580 is about 853.5689778805. The cubic root of 728580 is about 89.9827127290.

The spelling of 728580 in words is "seven hundred twenty-eight thousand, five hundred eighty".