72045372 has 48 divisors (see below), whose sum is σ = 195390720. Its totient is φ = 20234112.

The previous prime is 72045341. The next prime is 72045377. The reversal of 72045372 is 27354027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72045377) by changing a digit.

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, 2313 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (4070640).

Almost surely, 2^72045372 is an apocalyptic number.

It is an amenable number.

72045372 is an abundant number, since it is smaller than the sum of its proper divisors (123345348).

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

72045372 is a wasteful number, since it uses less digits than its factorization.

72045372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14610 (or 14608 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 72045372 is about 8487.9545239121. The cubic root of 72045372 is about 416.1041328934.

Adding to 72045372 its reverse (27354027), we get a palindrome (99399399).

The spelling of 72045372 in words is "seventy-two million, forty-five thousand, three hundred seventy-two".