72198845 has 8 divisors (see below), whose sum is σ = 89433600. Its totient is φ = 55895760.

The previous prime is 72198829. The next prime is 72198851. The reversal of 72198845 is 54889127.

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

It is not a de Polignac number, because 72198845 - 2⁴ = 72198829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72198796 and 72198805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232745 + ... + 233054.

It is an arithmetic number, because the mean of its divisors is an integer number (11179200).

Almost surely, 2^72198845 is an apocalyptic number.

It is an amenable number.

72198845 is a deficient number, since it is larger than the sum of its proper divisors (17234755).

72198845 is a wasteful number, since it uses less digits than its factorization.

72198845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465835.

The product of its digits is 161280, while the sum is 44.

The square root of 72198845 is about 8496.9903495296. The cubic root of 72198845 is about 416.3993887645.

The spelling of 72198845 in words is "seventy-two million, one hundred ninety-eight thousand, eight hundred forty-five".