72207324 has 72 divisors (see below), whose sum is σ = 210738528. Its totient is φ = 20419200.

The previous prime is 72207323. The next prime is 72207329. The reversal of 72207324 is 42370227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72207323) 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, 24034 + ... + 26870.

It is an arithmetic number, because the mean of its divisors is an integer number (2926924).

Almost surely, 2^72207324 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 72207324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105369264).

72207324 is an abundant number, since it is smaller than the sum of its proper divisors (138531204).

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

72207324 is a wasteful number, since it uses less digits than its factorization.

72207324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 72207324 is about 8497.4892762510. The cubic root of 72207324 is about 416.4156887123.

The spelling of 72207324 in words is "seventy-two million, two hundred seven thousand, three hundred twenty-four".