72240198 has 16 divisors (see below), whose sum is σ = 144576576. Its totient is φ = 24064040.

The previous prime is 72240187. The next prime is 72240241. The reversal of 72240198 is 89104227.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9013 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (9036036).

Almost surely, 2^72240198 is an apocalyptic number.

72240198 is an abundant number, since it is smaller than the sum of its proper divisors (72336378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72240198 is a wasteful number, since it uses less digits than its factorization.

72240198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 72240198 is about 8499.4233922073. The cubic root of 72240198 is about 416.4788733113.

The spelling of 72240198 in words is "seventy-two million, two hundred forty thousand, one hundred ninety-eight".