72440198 has 8 divisors (see below), whose sum is σ = 114379320. Its totient is φ = 34313760.

The previous prime is 72440167. The next prime is 72440227. The reversal of 72440198 is 89104427.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 953123 + ... + 953198.

It is an arithmetic number, because the mean of its divisors is an integer number (14297415).

Almost surely, 2^72440198 is an apocalyptic number.

72440198 is a deficient number, since it is larger than the sum of its proper divisors (41939122).

72440198 is a wasteful number, since it uses less digits than its factorization.

72440198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906342.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 72440198 is about 8511.1807641478. The cubic root of 72440198 is about 416.8628655377.

The spelling of 72440198 in words is "seventy-two million, four hundred forty thousand, one hundred ninety-eight".