72230324 has 18 divisors (see below), whose sum is σ = 133408674. Its totient is φ = 34213680.

The previous prime is 72230317. The next prime is 72230357. The reversal of 72230324 is 42303227.

It can be written as a sum of positive squares in only one way, i.e., 66129424 + 6100900 = 8132^2 + 2470^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72230324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23567 + ... + 26454.

It is an arithmetic number, because the mean of its divisors is an integer number (7411593).

Almost surely, 2^72230324 is an apocalyptic number.

It is an amenable number.

72230324 is a deficient number, since it is larger than the sum of its proper divisors (61178350).

72230324 is a wasteful number, since it uses less digits than its factorization.

72230324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50063 (or 50042 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 72230324 is about 8498.8425094244. The cubic root of 72230324 is about 416.4598972661.

The spelling of 72230324 in words is "seventy-two million, two hundred thirty thousand, three hundred twenty-four".