728684572 has 24 divisors (see below), whose sum is σ = 1589857920. Its totient is φ = 283902960.

The previous prime is 728684557. The next prime is 728684591. The reversal of 728684572 is 275486827.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 1182622 + ... + 1183237.

It is an arithmetic number, because the mean of its divisors is an integer number (66244080).

Almost surely, 2^728684572 is an apocalyptic number.

It is an amenable number.

728684572 is an abundant number, since it is smaller than the sum of its proper divisors (861173348).

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

728684572 is a wasteful number, since it uses less digits than its factorization.

728684572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365881 (or 2365879 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The square root of 728684572 is about 26994.1581087464. The cubic root of 728684572 is about 899.8701755125.

The spelling of 728684572 in words is "seven hundred twenty-eight million, six hundred eighty-four thousand, five hundred seventy-two".