745857456 has 40 divisors (see below), whose sum is σ = 2040141744. Its totient is φ = 233994240.

The previous prime is 745857449. The next prime is 745857479. The reversal of 745857456 is 654758547.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 745857399 and 745857408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456205 + ... + 457836.

Almost surely, 2^745857456 is an apocalyptic number.

It is an amenable number.

745857456 is an abundant number, since it is smaller than the sum of its proper divisors (1294284288).

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

745857456 is a wasteful number, since it uses less digits than its factorization.

745857456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914069 (or 914063 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The square root of 745857456 is about 27310.3909895117. The cubic root of 745857456 is about 906.8844289031.

The spelling of 745857456 in words is "seven hundred forty-five million, eight hundred fifty-seven thousand, four hundred fifty-six".