728568472446 has 64 divisors (see below), whose sum is σ = 1675347379200. Its totient is φ = 234414982368.

The previous prime is 728568472367. The next prime is 728568472447. The reversal of 728568472446 is 644274865827.

It is a happy number.

728568472446 is a `hidden beast` number, since 7 + 2 + 8 + 568 + 4 + 7 + 24 + 46 = 666.

It is a super-2 number, since 2×728568472446² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728568472447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5584071 + ... + 5713053.

It is an arithmetic number, because the mean of its divisors is an integer number (26177302800).

Almost surely, 2^728568472446 is an apocalyptic number.

728568472446 is an abundant number, since it is smaller than the sum of its proper divisors (946778906754).

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

728568472446 is a wasteful number, since it uses less digits than its factorization.

728568472446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132630 (or 132624 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 63.

The spelling of 728568472446 in words is "seven hundred twenty-eight billion, five hundred sixty-eight million, four hundred seventy-two thousand, four hundred forty-six".