72944245 has 12 divisors (see below), whose sum is σ = 96214860. Its totient is φ = 53049920.

The previous prime is 72944243. The next prime is 72944269. The reversal of 72944245 is 54244927.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 59120721 = 3718^2 + 7689^2 .

It is not a de Polignac number, because 72944245 - 2¹ = 72944243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72944243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59680 + ... + 60889.

It is an arithmetic number, because the mean of its divisors is an integer number (8017905).

Almost surely, 2^72944245 is an apocalyptic number.

It is an amenable number.

72944245 is a deficient number, since it is larger than the sum of its proper divisors (23270615).

72944245 is a wasteful number, since it uses less digits than its factorization.

72944245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120596 (or 120585 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 72944245 is about 8540.7403074909. The cubic root of 72944245 is about 417.8274911422.

The spelling of 72944245 in words is "seventy-two million, nine hundred forty-four thousand, two hundred forty-five".