745265280 has 64 divisors (see below), whose sum is σ = 2375539200. Its totient is φ = 198736896.

The previous prime is 745265239. The next prime is 745265299. The reversal of 745265280 is 82562547.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192160 + ... + 195999.

It is an arithmetic number, because the mean of its divisors is an integer number (37117800).

Almost surely, 2^745265280 is an apocalyptic number.

It is an amenable number.

745265280 is an abundant number, since it is smaller than the sum of its proper divisors (1630273920).

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

745265280 is a wasteful number, since it uses less digits than its factorization.

745265280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388181 (or 388169 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 745265280 is about 27299.5472489930. The cubic root of 745265280 is about 906.6443573903.

The spelling of 745265280 in words is "seven hundred forty-five million, two hundred sixty-five thousand, two hundred eighty".