72441328 has 20 divisors (see below), whose sum is σ = 141171768. Its totient is φ = 36009920.

The previous prime is 72441323. The next prime is 72441337. The reversal of 72441328 is 82314427.

It is a self number, because there is not a number n which added to its sum of digits gives 72441328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72441323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10318 + ... + 15853.

Almost surely, 2^72441328 is an apocalyptic number.

It is an amenable number.

72441328 is a deficient number, since it is larger than the sum of its proper divisors (68730440).

72441328 is a wasteful number, since it uses less digits than its factorization.

72441328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26352 (or 26346 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 72441328 is about 8511.2471471577. The cubic root of 72441328 is about 416.8650330846.

The spelling of 72441328 in words is "seventy-two million, four hundred forty-one thousand, three hundred twenty-eight".