72067215 has 32 divisors (see below), whose sum is σ = 128480256. Its totient is φ = 34194560.

The previous prime is 72067213. The next prime is 72067223. The reversal of 72067215 is 51276027.

It is not a de Polignac number, because 72067215 - 2¹ = 72067213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72067213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3109 + ... + 12401.

It is an arithmetic number, because the mean of its divisors is an integer number (4015008).

Almost surely, 2^72067215 is an apocalyptic number.

72067215 is a deficient number, since it is larger than the sum of its proper divisors (56413041).

72067215 is a wasteful number, since it uses less digits than its factorization.

72067215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 72067215 is about 8489.2411321625. The cubic root of 72067215 is about 416.1461806749.

The spelling of 72067215 in words is "seventy-two million, sixty-seven thousand, two hundred fifteen".