72233620 has 24 divisors (see below), whose sum is σ = 155791944. Its totient is φ = 28112256.

The previous prime is 72233599. The next prime is 72233621. The reversal of 72233620 is 2633227.

It can be written as a sum of positive squares in 4 ways, for example, as 33942276 + 38291344 = 5826^2 + 6188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72233621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48067 + ... + 49546.

It is an arithmetic number, because the mean of its divisors is an integer number (6491331).

Almost surely, 2^72233620 is an apocalyptic number.

It is an amenable number.

72233620 is an abundant number, since it is smaller than the sum of its proper divisors (83558324).

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

72233620 is a wasteful number, since it uses less digits than its factorization.

72233620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97659 (or 97657 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 72233620 is about 8499.0364159709. The cubic root of 72233620 is about 416.4662317753.

Adding to 72233620 its reverse (2633227), we get a palindrome (74866847).

The spelling of 72233620 in words is "seventy-two million, two hundred thirty-three thousand, six hundred twenty".