72198015 has 8 divisors (see below), whose sum is σ = 115516848. Its totient is φ = 38505600.

The previous prime is 72197999. The next prime is 72198029. The reversal of 72198015 is 51089127.

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

It is not a de Polignac number, because 72198015 - 2⁴ = 72197999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406586 + ... + 2406615.

It is an arithmetic number, because the mean of its divisors is an integer number (14439606).

Almost surely, 2^72198015 is an apocalyptic number.

72198015 is a deficient number, since it is larger than the sum of its proper divisors (43318833).

72198015 is a wasteful number, since it uses less digits than its factorization.

72198015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813209.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 72198015 is about 8496.9415085665. The cubic root of 72198015 is about 416.3977931119.

The spelling of 72198015 in words is "seventy-two million, one hundred ninety-eight thousand, fifteen".