728859474 has 24 divisors (see below), whose sum is σ = 1804795200. Its totient is φ = 208245528.

The previous prime is 728859473. The next prime is 728859491. The reversal of 728859474 is 474958827.

It is a happy number.

It is a super-2 number, since 2×728859474² = 1062472265679113352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728859474.

It is not an unprimeable number, because it can be changed into a prime (728859473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2892174 + ... + 2892425.

It is an arithmetic number, because the mean of its divisors is an integer number (75199800).

Almost surely, 2^728859474 is an apocalyptic number.

728859474 is an abundant number, since it is smaller than the sum of its proper divisors (1075935726).

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

728859474 is a wasteful number, since it uses less digits than its factorization.

728859474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784614 (or 5784611 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 728859474 is about 26997.3975412446. The cubic root of 728859474 is about 899.9421666541.

The spelling of 728859474 in words is "seven hundred twenty-eight million, eight hundred fifty-nine thousand, four hundred seventy-four".