72323244 has 72 divisors (see below), whose sum is σ = 210930720. Its totient is φ = 20466432.

The previous prime is 72323213. The next prime is 72323249. The reversal of 72323244 is 44232327.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (72323249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26152 + ... + 28784.

Almost surely, 2^72323244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72323244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105465360).

72323244 is an abundant number, since it is smaller than the sum of its proper divisors (138607476).

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

72323244 is a wasteful number, since it uses less digits than its factorization.

72323244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2754 counting only the distinct ones).

The product of its digits is 8064, while the sum is 27.

The square root of 72323244 is about 8504.3073792050. The cubic root of 72323244 is about 416.6384043408.

The spelling of 72323244 in words is "seventy-two million, three hundred twenty-three thousand, two hundred forty-four".