744928245 has 20 divisors (see below), whose sum is σ = 1335353580. Its totient is φ = 397294848.

The previous prime is 744928243. The next prime is 744928271. The reversal of 744928245 is 542829447.

It can be written as a sum of positive squares in 2 ways, for example, as 456505956 + 288422289 = 21366^2 + 16983^2 .

It is not a de Polignac number, because 744928245 - 2¹ = 744928243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 744928245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744928243) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 919260 + ... + 920069.

It is an arithmetic number, because the mean of its divisors is an integer number (66767679).

Almost surely, 2^744928245 is an apocalyptic number.

It is an amenable number.

744928245 is a deficient number, since it is larger than the sum of its proper divisors (590425335).

744928245 is a wasteful number, since it uses less digits than its factorization.

744928245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839346 (or 1839337 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 744928245 is about 27293.3736463633. The cubic root of 744928245 is about 906.5076646967.

The spelling of 744928245 in words is "seven hundred forty-four million, nine hundred twenty-eight thousand, two hundred forty-five".