72323249 has 2 divisors, whose sum is σ = 72323250. Its totient is φ = 72323248.

The previous prime is 72323213. The next prime is 72323257. The reversal of 72323249 is 94232327.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 616225 = 8468^2 + 785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72323249 is a prime.

It is not a weakly prime, because it can be changed into another prime (72322249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161624 + 36161625.

It is an arithmetic number, because the mean of its divisors is an integer number (36161625).

Almost surely, 2^72323249 is an apocalyptic number.

It is an amenable number.

72323249 is a deficient number, since it is larger than the sum of its proper divisors (1).

72323249 is an equidigital number, since it uses as much as digits as its factorization.

72323249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 72323249 is about 8504.3076731736. The cubic root of 72323249 is about 416.6384139421.

The spelling of 72323249 in words is "seventy-two million, three hundred twenty-three thousand, two hundred forty-nine".