72240849 has 8 divisors (see below), whose sum is σ = 107023520. Its totient is φ = 48160548.

The previous prime is 72240841. The next prime is 72240853. The reversal of 72240849 is 94804227.

It is not a de Polignac number, because 72240849 - 2³ = 72240841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72240841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337767 + ... + 1337820.

It is an arithmetic number, because the mean of its divisors is an integer number (13377940).

Almost surely, 2^72240849 is an apocalyptic number.

It is an amenable number.

72240849 is a deficient number, since it is larger than the sum of its proper divisors (34782671).

72240849 is a wasteful number, since it uses less digits than its factorization.

72240849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675596 (or 2675590 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72240849 is about 8499.4616888365. The cubic root of 72240849 is about 416.4801243550.

The spelling of 72240849 in words is "seventy-two million, two hundred forty thousand, eight hundred forty-nine".