72900269 has 4 divisors (see below), whose sum is σ = 78507996. Its totient is φ = 67292544.

The previous prime is 72900259. The next prime is 72900299. The reversal of 72900269 is 96200927.

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 49984900 + 22915369 = 7070^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 72900269 - 2⁸ = 72900013 is a prime.

It is a super-3 number, since 3×72900269³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72900259) 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, 2803844 + ... + 2803869.

It is an arithmetic number, because the mean of its divisors is an integer number (19626999).

Almost surely, 2^72900269 is an apocalyptic number.

It is an amenable number.

72900269 is a deficient number, since it is larger than the sum of its proper divisors (5607727).

72900269 is a wasteful number, since it uses less digits than its factorization.

72900269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607726.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 72900269 is about 8538.1654352677. The cubic root of 72900269 is about 417.7435088465.

The spelling of 72900269 in words is "seventy-two million, nine hundred thousand, two hundred sixty-nine".