72110233 has 4 divisors (see below), whose sum is σ = 77657188. Its totient is φ = 66563280.

The previous prime is 72110231. The next prime is 72110251. The reversal of 72110233 is 33201127.

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 47775744 + 24334489 = 6912^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 72110233 - 2¹ = 72110231 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 72110233.

It is not an unprimeable number, because it can be changed into a prime (72110231) 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, 2773458 + ... + 2773483.

It is an arithmetic number, because the mean of its divisors is an integer number (19414297).

Almost surely, 2^72110233 is an apocalyptic number.

It is an amenable number.

72110233 is a deficient number, since it is larger than the sum of its proper divisors (5546955).

72110233 is a wasteful number, since it uses less digits than its factorization.

72110233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546954.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 72110233 is about 8491.7744317663. The cubic root of 72110233 is about 416.2289655012.

The spelling of 72110233 in words is "seventy-two million, one hundred ten thousand, two hundred thirty-three".