72619198 has 4 divisors (see below), whose sum is σ = 108928800. Its totient is φ = 36309598.

The previous prime is 72619193. The next prime is 72619199. The reversal of 72619198 is 89191627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89191627 = 7 ⋅12741661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72619193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18154798 + ... + 18154801.

It is an arithmetic number, because the mean of its divisors is an integer number (27232200).

Almost surely, 2^72619198 is an apocalyptic number.

72619198 is a deficient number, since it is larger than the sum of its proper divisors (36309602).

72619198 is a wasteful number, since it uses less digits than its factorization.

72619198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36309601.

The product of its digits is 54432, while the sum is 43.

The square root of 72619198 is about 8521.6898558913. The cubic root of 72619198 is about 417.2059396797.

The spelling of 72619198 in words is "seventy-two million, six hundred nineteen thousand, one hundred ninety-eight".