745294678728 has 32 divisors (see below), whose sum is σ = 1876836972960. Its totient is φ = 246618189440.

The previous prime is 745294678669. The next prime is 745294678753. The reversal of 745294678728 is 827876492547.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113332278 + ... + 113338853.

It is an arithmetic number, because the mean of its divisors is an integer number (58651155405).

Almost surely, 2^745294678728 is an apocalyptic number.

It is an amenable number.

745294678728 is an abundant number, since it is smaller than the sum of its proper divisors (1131542294232).

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

745294678728 is a wasteful number, since it uses less digits than its factorization.

745294678728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226671277 (or 226671273 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 69.

The spelling of 745294678728 in words is "seven hundred forty-five billion, two hundred ninety-four million, six hundred seventy-eight thousand, seven hundred twenty-eight".