745578278 has 32 divisors (see below), whose sum is σ = 1207516800. Its totient is φ = 344196864.

The previous prime is 745578271. The next prime is 745578287. The reversal of 745578278 is 872875547.

745578278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745578271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245453 + ... + 248471.

It is an arithmetic number, because the mean of its divisors is an integer number (37734900).

Almost surely, 2^745578278 is an apocalyptic number.

745578278 is a deficient number, since it is larger than the sum of its proper divisors (461938522).

745578278 is a wasteful number, since it uses less digits than its factorization.

745578278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204.

The product of its digits is 4390400, while the sum is 53.

The square root of 745578278 is about 27305.2793063906. The cubic root of 745578278 is about 906.7712643948.

The spelling of 745578278 in words is "seven hundred forty-five million, five hundred seventy-eight thousand, two hundred seventy-eight".