72445233 has 32 divisors (see below), whose sum is σ = 119971840. Its totient is φ = 37946880.

The previous prime is 72445231. The next prime is 72445249. The reversal of 72445233 is 33254427.

It is not a de Polignac number, because 72445233 - 2¹ = 72445231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72445233.

It is not an unprimeable number, because it can be changed into a prime (72445231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9441 + ... + 15297.

It is an arithmetic number, because the mean of its divisors is an integer number (3749120).

Almost surely, 2^72445233 is an apocalyptic number.

It is an amenable number.

72445233 is a deficient number, since it is larger than the sum of its proper divisors (47526607).

72445233 is a wasteful number, since it uses less digits than its factorization.

72445233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917.

The product of its digits is 20160, while the sum is 30.

The square root of 72445233 is about 8511.4765464049. The cubic root of 72445233 is about 416.8725234162.

The spelling of 72445233 in words is "seventy-two million, four hundred forty-five thousand, two hundred thirty-three".