72085198 has 4 divisors (see below), whose sum is σ = 108127800. Its totient is φ = 36042598.

The previous prime is 72085193. The next prime is 72085207. The reversal of 72085198 is 89158027.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72085198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72085193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18021298 + ... + 18021301.

It is an arithmetic number, because the mean of its divisors is an integer number (27031950).

Almost surely, 2^72085198 is an apocalyptic number.

72085198 is a deficient number, since it is larger than the sum of its proper divisors (36042602).

72085198 is a wasteful number, since it uses less digits than its factorization.

72085198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36042601.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 72085198 is about 8490.3002302628. The cubic root of 72085198 is about 416.1807915790.

The spelling of 72085198 in words is "seventy-two million, eighty-five thousand, one hundred ninety-eight".