72248873 has 4 divisors (see below), whose sum is σ = 72559188. Its totient is φ = 71938560.

The previous prime is 72248867. The next prime is 72248881. The reversal of 72248873 is 37884227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9078169 + 63170704 = 3013^2 + 7948^2 .

It is a cyclic number.

It is not a de Polignac number, because 72248873 - 2⁴ = 72248857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72248873.

It is not an unprimeable number, because it can be changed into a prime (72242873) 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 3 ways as a sum of consecutive naturals, for example, 154808 + ... + 155273.

It is an arithmetic number, because the mean of its divisors is an integer number (18139797).

Almost surely, 2^72248873 is an apocalyptic number.

It is an amenable number.

72248873 is a deficient number, since it is larger than the sum of its proper divisors (310315).

72248873 is a wasteful number, since it uses less digits than its factorization.

72248873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310314.

The product of its digits is 150528, while the sum is 41.

The square root of 72248873 is about 8499.9337056238. The cubic root of 72248873 is about 416.4955436680.

The spelling of 72248873 in words is "seventy-two million, two hundred forty-eight thousand, eight hundred seventy-three".