72264259 has 4 divisors (see below), whose sum is σ = 74756160. Its totient is φ = 69772360.

The previous prime is 72264253. The next prime is 72264287. The reversal of 72264259 is 95246227.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72264259 - 2⁹ = 72263747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72264253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245907 + ... + 1245964.

It is an arithmetic number, because the mean of its divisors is an integer number (18689040).

Almost surely, 2^72264259 is an apocalyptic number.

72264259 is a deficient number, since it is larger than the sum of its proper divisors (2491901).

72264259 is a wasteful number, since it uses less digits than its factorization.

72264259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491900.

The product of its digits is 60480, while the sum is 37.

The square root of 72264259 is about 8500.8387233261. The cubic root of 72264259 is about 416.5251069693.

The spelling of 72264259 in words is "seventy-two million, two hundred sixty-four thousand, two hundred fifty-nine".