745320144 has 40 divisors (see below), whose sum is σ = 2026750240. Its totient is φ = 235363968.

The previous prime is 745320131. The next prime is 745320151. The reversal of 745320144 is 441023547.

745320144 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407707 + ... + 409530.

It is an arithmetic number, because the mean of its divisors is an integer number (50668756).

Almost surely, 2^745320144 is an apocalyptic number.

It is an amenable number.

745320144 is an abundant number, since it is smaller than the sum of its proper divisors (1281430096).

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

745320144 is a wasteful number, since it uses less digits than its factorization.

745320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817267 (or 817261 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 745320144 is about 27300.5520823298. The cubic root of 745320144 is about 906.6666049116. Note that the first 4 decimals are identical.

The spelling of 745320144 in words is "seven hundred forty-five million, three hundred twenty thousand, one hundred forty-four".