728477132 has 12 divisors (see below), whose sum is σ = 1349825400. Its totient is φ = 342812736.

The previous prime is 728477093. The next prime is 728477159. The reversal of 728477132 is 231774827.

It is a self number, because there is not a number n which added to its sum of digits gives 728477132.

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, 5356382 + ... + 5356517.

It is an arithmetic number, because the mean of its divisors is an integer number (112485450).

Almost surely, 2^728477132 is an apocalyptic number.

It is an amenable number.

728477132 is a deficient number, since it is larger than the sum of its proper divisors (621348268).

728477132 is a wasteful number, since it uses less digits than its factorization.

728477132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712920 (or 10712918 counting only the distinct ones).

The product of its digits is 131712, while the sum is 41.

The square root of 728477132 is about 26990.3155224240. The cubic root of 728477132 is about 899.7847765197.

The spelling of 728477132 in words is "seven hundred twenty-eight million, four hundred seventy-seven thousand, one hundred thirty-two".