72243318 has 32 divisors (see below), whose sum is σ = 165636864. Its totient is φ = 20577312.

The previous prime is 72243307. The next prime is 72243323. The reversal of 72243318 is 81334227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12096 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (5176152).

Almost surely, 2^72243318 is an apocalyptic number.

72243318 is an abundant number, since it is smaller than the sum of its proper divisors (93393546).

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

72243318 is a wasteful number, since it uses less digits than its factorization.

72243318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316.

The product of its digits is 8064, while the sum is 30.

The square root of 72243318 is about 8499.6069320881. The cubic root of 72243318 is about 416.4848690284.

Subtracting 72243318 from its reverse (81334227), we obtain a palindrome (9090909).

The spelling of 72243318 in words is "seventy-two million, two hundred forty-three thousand, three hundred eighteen".