728570474 has 16 divisors (see below), whose sum is σ = 1099672200. Its totient is φ = 362019840.

The previous prime is 728570473. The next prime is 728570477. The reversal of 728570474 is 474075827.

It can be written as a sum of positive squares in 4 ways, for example, as 726679849 + 1890625 = 26957^2 + 1375^2 .

It is not an unprimeable number, because it can be changed into a prime (728570473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284552 + ... + 287100.

Almost surely, 2^728570474 is an apocalyptic number.

728570474 is a deficient number, since it is larger than the sum of its proper divisors (371101726).

728570474 is a wasteful number, since it uses less digits than its factorization.

728570474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385.

The product of its (nonzero) digits is 439040, while the sum is 44.

The square root of 728570474 is about 26992.0446428202. The cubic root of 728570474 is about 899.8232056023.

The spelling of 728570474 in words is "seven hundred twenty-eight million, five hundred seventy thousand, four hundred seventy-four".