728632 has 8 divisors (see below), whose sum is σ = 1366200. Its totient is φ = 364312.

The previous prime is 728627. The next prime is 728639. The reversal of 728632 is 236827.

728632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 728632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45532 + ... + 45547.

It is an arithmetic number, because the mean of its divisors is an integer number (170775).

2⁷²⁸⁶³² is an apocalyptic number.

It is an amenable number.

728632 is a deficient number, since it is larger than the sum of its proper divisors (637568).

728632 is a wasteful number, since it uses less digits than its factorization.

728632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91085 (or 91081 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 728632 is about 853.5994376755. The cubic root of 728632 is about 89.9848534181.

The spelling of 728632 in words is "seven hundred twenty-eight thousand, six hundred thirty-two".