72343072 has 24 divisors (see below), whose sum is σ = 144764172. Its totient is φ = 35577600.

The previous prime is 72343069. The next prime is 72343087. The reversal of 72343072 is 27034327.

It can be written as a sum of positive squares in 2 ways, for example, as 71978256 + 364816 = 8484^2 + 604^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72343072.

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 3 ways as a sum of consecutive naturals, for example, 16579 + ... + 20482.

Almost surely, 2^72343072 is an apocalyptic number.

It is an amenable number.

72343072 is an abundant number, since it is smaller than the sum of its proper divisors (72421100).

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

72343072 is a wasteful number, since it uses less digits than its factorization.

72343072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37132 (or 37124 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 72343072 is about 8505.4730615058. The cubic root of 72343072 is about 416.6764757869.

Adding to 72343072 its reverse (27034327), we get a palindrome (99377399).

The spelling of 72343072 in words is "seventy-two million, three hundred forty-three thousand, seventy-two".