749428 has 24 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 345984.

The previous prime is 749423. The next prime is 749429. The reversal of 749428 is 824947.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 749393 and 749402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6951 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2⁷⁴⁹⁴²⁸ is an apocalyptic number.

It is an amenable number.

749428 is a deficient number, since it is larger than the sum of its proper divisors (665804).

749428 is a wasteful number, since it uses less digits than its factorization.

749428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 229 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 749428 is about 865.6950964398. The cubic root of 749428 is about 90.8329261454.

The spelling of 749428 in words is "seven hundred forty-nine thousand, four hundred twenty-eight".