72128195 has 8 divisors (see below), whose sum is σ = 91645344. Its totient is φ = 54308224.

The previous prime is 72128183. The next prime is 72128197. The reversal of 72128195 is 59182127.

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

It is a cyclic number.

It is not a de Polignac number, because 72128195 - 2⁶ = 72128131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72128197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424199 + ... + 424368.

It is an arithmetic number, because the mean of its divisors is an integer number (11455668).

Almost surely, 2^72128195 is an apocalyptic number.

72128195 is a deficient number, since it is larger than the sum of its proper divisors (19517149).

72128195 is a wasteful number, since it uses less digits than its factorization.

72128195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848589.

The product of its digits is 10080, while the sum is 35.

The square root of 72128195 is about 8492.8319776150. The cubic root of 72128195 is about 416.2635222426.

The spelling of 72128195 in words is "seventy-two million, one hundred twenty-eight thousand, one hundred ninety-five".