728374465 has 96 divisors (see below), whose sum is σ = 1168425216. Its totient is φ = 431101440.

The previous prime is 728374459. The next prime is 728374483. The reversal of 728374465 is 564473827.

It is not a de Polignac number, because 728374465 - 2³ = 728374457 is a prime.

It is a super-2 number, since 2×728374465² = 1061058722528072450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4468474 + ... + 4468636.

It is an arithmetic number, because the mean of its divisors is an integer number (12171096).

Almost surely, 2^728374465 is an apocalyptic number.

It is an amenable number.

728374465 is a deficient number, since it is larger than the sum of its proper divisors (440050751).

728374465 is a wasteful number, since it uses less digits than its factorization.

728374465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 272 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 46.

The square root of 728374465 is about 26988.4135324772. The cubic root of 728374465 is about 899.7425045253.

The spelling of 728374465 in words is "seven hundred twenty-eight million, three hundred seventy-four thousand, four hundred sixty-five".