72008944 has 20 divisors (see below), whose sum is σ = 159448624. Its totient is φ = 30860928.

The previous prime is 72008941. The next prime is 72008953. The reversal of 72008944 is 44980027.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72008941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321357 + ... + 321580.

Almost surely, 2^72008944 is an apocalyptic number.

It is an amenable number.

72008944 is an abundant number, since it is smaller than the sum of its proper divisors (87439680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72008944 is a wasteful number, since it uses less digits than its factorization.

72008944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642952 (or 642946 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 72008944 is about 8485.8083881266. The cubic root of 72008944 is about 416.0339900728.

The spelling of 72008944 in words is "seventy-two million, eight thousand, nine hundred forty-four".