72448894 has 32 divisors (see below), whose sum is σ = 128088576. Its totient is φ = 30088800.

The previous prime is 72448889. The next prime is 72448903. The reversal of 72448894 is 49884427.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90504 + ... + 91300.

It is an arithmetic number, because the mean of its divisors is an integer number (4002768).

Almost surely, 2^72448894 is an apocalyptic number.

72448894 is a deficient number, since it is larger than the sum of its proper divisors (55639682).

72448894 is a wasteful number, since it uses less digits than its factorization.

72448894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its digits is 516096, while the sum is 46.

The square root of 72448894 is about 8511.6916062555. The cubic root of 72448894 is about 416.8795454775.

The spelling of 72448894 in words is "seventy-two million, four hundred forty-eight thousand, eight hundred ninety-four".