72127215 has 12 divisors (see below), whose sum is σ = 125020584. Its totient is φ = 38467824.

The previous prime is 72127201. The next prime is 72127219. The reversal of 72127215 is 51272127.

It is not a de Polignac number, because 72127215 - 2⁶ = 72127151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72127219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801369 + ... + 801458.

It is an arithmetic number, because the mean of its divisors is an integer number (10418382).

Almost surely, 2^72127215 is an apocalyptic number.

72127215 is a deficient number, since it is larger than the sum of its proper divisors (52893369).

72127215 is a wasteful number, since it uses less digits than its factorization.

72127215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602838 (or 1602835 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 72127215 is about 8492.7742817056. The cubic root of 72127215 is about 416.2616369877.

The spelling of 72127215 in words is "seventy-two million, one hundred twenty-seven thousand, two hundred fifteen".