72264237 has 4 divisors (see below), whose sum is σ = 96352320. Its totient is φ = 48176156.

The previous prime is 72264217. The next prime is 72264253. The reversal of 72264237 is 73246227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72264237 - 2⁷ = 72264109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72264198 and 72264207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72264217) 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, 12044037 + ... + 12044042.

It is an arithmetic number, because the mean of its divisors is an integer number (24088080).

Almost surely, 2^72264237 is an apocalyptic number.

It is an amenable number.

72264237 is a deficient number, since it is larger than the sum of its proper divisors (24088083).

72264237 is a wasteful number, since it uses less digits than its factorization.

72264237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088082.

The product of its digits is 28224, while the sum is 33.

The square root of 72264237 is about 8500.8374293360. The cubic root of 72264237 is about 416.5250647005.

The spelling of 72264237 in words is "seventy-two million, two hundred sixty-four thousand, two hundred thirty-seven".