72344474 has 8 divisors (see below), whose sum is σ = 108586740. Its totient is φ = 36148896.

The previous prime is 72344449. The next prime is 72344477. The reversal of 72344474 is 47444327.

It can be written as a sum of positive squares in 2 ways, for example, as 63600625 + 8743849 = 7975^2 + 2957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72344477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7499 + ... + 14174.

Almost surely, 2^72344474 is an apocalyptic number.

72344474 is a deficient number, since it is larger than the sum of its proper divisors (36242266).

72344474 is a wasteful number, since it uses less digits than its factorization.

72344474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23344.

The product of its digits is 75264, while the sum is 35.

The square root of 72344474 is about 8505.5554786269. Note that the first 3 decimals coincide. The cubic root of 72344474 is about 416.6791674827.

The spelling of 72344474 in words is "seventy-two million, three hundred forty-four thousand, four hundred seventy-four".