749128 has 16 divisors (see below), whose sum is σ = 1453500. Its totient is φ = 361536.

The previous prime is 749093. The next prime is 749129. The reversal of 749128 is 821947.

749128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 743044 + 6084 = 862^2 + 78^2 .

It is a super-2 number, since 2×749128² = 1122385520768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749128.

It is not an unprimeable number, because it can be changed into a prime (749129) 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, 1383 + ... + 1846.

2⁷⁴⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

749128 is a deficient number, since it is larger than the sum of its proper divisors (704372).

749128 is a wasteful number, since it uses less digits than its factorization.

749128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264 (or 3260 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 749128 is about 865.5218079286. The cubic root of 749128 is about 90.8208042272.

The spelling of 749128 in words is "seven hundred forty-nine thousand, one hundred twenty-eight".