72247238 has 16 divisors (see below), whose sum is σ = 125422080. Its totient is φ = 30570696.

The previous prime is 72247183. The next prime is 72247247. The reversal of 72247238 is 83274227.

It is a junction number, because it is equal to n+sod(n) for n = 72247198 and 72247207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31556 + ... + 33767.

It is an arithmetic number, because the mean of its divisors is an integer number (7838880).

Almost surely, 2^72247238 is an apocalyptic number.

72247238 is a deficient number, since it is larger than the sum of its proper divisors (53174842).

72247238 is a wasteful number, since it uses less digits than its factorization.

72247238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65411.

The product of its digits is 37632, while the sum is 35.

The square root of 72247238 is about 8499.8375278590. The cubic root of 72247238 is about 416.4924018642.

The spelling of 72247238 in words is "seventy-two million, two hundred forty-seven thousand, two hundred thirty-eight".