728016732 has 36 divisors (see below), whose sum is σ = 1844298456. Its totient is φ = 242140320.

The previous prime is 728016683. The next prime is 728016733. The reversal of 728016732 is 237610827.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728016733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5338 + ... + 38529.

Almost surely, 2^728016732 is an apocalyptic number.

It is an amenable number.

728016732 is an abundant number, since it is smaller than the sum of its proper divisors (1116281724).

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

728016732 is a wasteful number, since it uses less digits than its factorization.

728016732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44338 (or 44333 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 728016732 is about 26981.7851892717. The cubic root of 728016732 is about 899.5951809030.

The spelling of 728016732 in words is "seven hundred twenty-eight million, sixteen thousand, seven hundred thirty-two".