749728 has 24 divisors (see below), whose sum is σ = 1687392. Its totient is φ = 321216.

The previous prime is 749711. The next prime is 749729. The reversal of 749728 is 827947.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (749729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450 + ... + 1897.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁷⁴⁹⁷²⁸ is an apocalyptic number.

It is an amenable number.

749728 is an abundant number, since it is smaller than the sum of its proper divisors (937664).

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

749728 is a wasteful number, since it uses less digits than its factorization.

749728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364 (or 3356 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 749728 is about 865.8683502704. The cubic root of 749728 is about 90.8450448291.

The spelling of 749728 in words is "seven hundred forty-nine thousand, seven hundred twenty-eight".