728979476 has 12 divisors (see below), whose sum is σ = 1310193108. Its totient is φ = 354638592.

The previous prime is 728979421. The next prime is 728979487. The reversal of 728979476 is 674979827.

It can be written as a sum of positive squares in 2 ways, for example, as 465696400 + 263283076 = 21580^2 + 16226^2 .

It is a super-2 number, since 2×728979476² = 1062822152858469152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2462621 + ... + 2462916.

It is an arithmetic number, because the mean of its divisors is an integer number (109182759).

Almost surely, 2^728979476 is an apocalyptic number.

It is an amenable number.

728979476 is a deficient number, since it is larger than the sum of its proper divisors (581213632).

728979476 is a wasteful number, since it uses less digits than its factorization.

728979476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925578 (or 4925576 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 59.

The square root of 728979476 is about 26999.6199232508. The cubic root of 728979476 is about 899.9915538302.

The spelling of 728979476 in words is "seven hundred twenty-eight million, nine hundred seventy-nine thousand, four hundred seventy-six".