72447418 has 8 divisors (see below), whose sum is σ = 114390720. Its totient is φ = 34317180.

The previous prime is 72447407. The next prime is 72447433. The reversal of 72447418 is 81474427.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953218 + ... + 953293.

It is an arithmetic number, because the mean of its divisors is an integer number (14298840).

Almost surely, 2^72447418 is an apocalyptic number.

72447418 is a deficient number, since it is larger than the sum of its proper divisors (41943302).

72447418 is a wasteful number, since it uses less digits than its factorization.

72447418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906532.

The product of its digits is 50176, while the sum is 37.

The square root of 72447418 is about 8511.6049015447. The cubic root of 72447418 is about 416.8767144318.

The spelling of 72447418 in words is "seventy-two million, four hundred forty-seven thousand, four hundred eighteen".