745628 has 18 divisors (see below), whose sum is σ = 1414224. Its totient is φ = 343824.

The previous prime is 745621. The next prime is 745631. The reversal of 745628 is 826547.

It is a super-2 number, since 2×745628² = 1111922228768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 745594 and 745603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745621) by changing a digit.

745628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125 + ... + 1227.

It is an arithmetic number, because the mean of its divisors is an integer number (78568).

2⁷⁴⁵⁶²⁸ is an apocalyptic number.

It is an amenable number.

745628 is a deficient number, since it is larger than the sum of its proper divisors (668596).

745628 is a wasteful number, since it uses less digits than its factorization.

745628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1118 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 745628 is about 863.4975390816. The cubic root of 745628 is about 90.6791421222.

The spelling of 745628 in words is "seven hundred forty-five thousand, six hundred twenty-eight".