72238249 has 4 divisors (see below), whose sum is σ = 72716800. Its totient is φ = 71759700.

The previous prime is 72238241. The next prime is 72238259. The reversal of 72238249 is 94283227.

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 72238249 - 2³ = 72238241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72238241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239049 + ... + 239350.

It is an arithmetic number, because the mean of its divisors is an integer number (18179200).

Almost surely, 2^72238249 is an apocalyptic number.

It is an amenable number.

72238249 is a deficient number, since it is larger than the sum of its proper divisors (478551).

72238249 is a wasteful number, since it uses less digits than its factorization.

72238249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478550.

The product of its digits is 48384, while the sum is 37.

The square root of 72238249 is about 8499.3087365973. The cubic root of 72238249 is about 416.4751278222.

The spelling of 72238249 in words is "seventy-two million, two hundred thirty-eight thousand, two hundred forty-nine".