728764132 has 12 divisors (see below), whose sum is σ = 1282463280. Its totient is φ = 362346056.

The previous prime is 728764117. The next prime is 728764147. The reversal of 728764132 is 231467827.

It is an interprime number because it is at equal distance from previous prime (728764117) and next prime (728764147).

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, 508198 + ... + 509629.

It is an arithmetic number, because the mean of its divisors is an integer number (106871940).

Almost surely, 2^728764132 is an apocalyptic number.

It is an amenable number.

728764132 is a deficient number, since it is larger than the sum of its proper divisors (553699148).

728764132 is a wasteful number, since it uses less digits than its factorization.

728764132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018010 (or 1018008 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 728764132 is about 26995.6317207062. The cubic root of 728764132 is about 899.9029245091.

The spelling of 728764132 in words is "seven hundred twenty-eight million, seven hundred sixty-four thousand, one hundred thirty-two".