72245109 has 8 divisors (see below), whose sum is σ = 97487712. Its totient is φ = 47582960.

The previous prime is 72245101. The next prime is 72245137. The reversal of 72245109 is 90154227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72245109 - 2³ = 72245101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72245101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144822 + ... + 145319.

It is an arithmetic number, because the mean of its divisors is an integer number (12185964).

Almost surely, 2^72245109 is an apocalyptic number.

It is an amenable number.

72245109 is a deficient number, since it is larger than the sum of its proper divisors (25242603).

72245109 is a wasteful number, since it uses less digits than its factorization.

72245109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290227.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 72245109 is about 8499.7122892484. The cubic root of 72245109 is about 416.4883107226.

The spelling of 72245109 in words is "seventy-two million, two hundred forty-five thousand, one hundred nine".