72814198 has 4 divisors (see below), whose sum is σ = 109221300. Its totient is φ = 36407098.

The previous prime is 72814169. The next prime is 72814211. The reversal of 72814198 is 89141827.

It is a happy number.

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 72814198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18203548 + ... + 18203551.

It is an arithmetic number, because the mean of its divisors is an integer number (27305325).

Almost surely, 2^72814198 is an apocalyptic number.

72814198 is a deficient number, since it is larger than the sum of its proper divisors (36407102).

72814198 is a wasteful number, since it uses less digits than its factorization.

72814198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36407101.

The product of its digits is 32256, while the sum is 40.

The square root of 72814198 is about 8533.1235781512. The cubic root of 72814198 is about 417.5790386652.

The spelling of 72814198 in words is "seventy-two million, eight hundred fourteen thousand, one hundred ninety-eight".