745217828 has 12 divisors (see below), whose sum is σ = 1304652300. Its totient is φ = 372460032.

The previous prime is 745217813. The next prime is 745217833. The reversal of 745217828 is 828712547.

745217828 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 653211364 + 92006464 = 25558^2 + 9592^2 .

It is a super-2 number, since 2×745217828² = 1110699222338075168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25553 + ... + 46296.

It is an arithmetic number, because the mean of its divisors is an integer number (108721025).

Almost surely, 2^745217828 is an apocalyptic number.

It is an amenable number.

745217828 is a deficient number, since it is larger than the sum of its proper divisors (559434472).

745217828 is a wasteful number, since it uses less digits than its factorization.

745217828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74446 (or 74444 counting only the distinct ones).

The product of its digits is 250880, while the sum is 44.

The square root of 745217828 is about 27298.6781364959. The cubic root of 745217828 is about 906.6251145774.

The spelling of 745217828 in words is "seven hundred forty-five million, two hundred seventeen thousand, eight hundred twenty-eight".