72530215 has 8 divisors (see below), whose sum is σ = 87384528. Its totient is φ = 57792000.

The previous prime is 72530209. The next prime is 72530219. The reversal of 72530215 is 51203527.

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

It is not a de Polignac number, because 72530215 - 2¹¹ = 72528167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72530215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72530219) 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 7 ways as a sum of consecutive naturals, for example, 27642 + ... + 30151.

It is an arithmetic number, because the mean of its divisors is an integer number (10923066).

Almost surely, 2^72530215 is an apocalyptic number.

72530215 is a deficient number, since it is larger than the sum of its proper divisors (14854313).

72530215 is a wasteful number, since it uses less digits than its factorization.

72530215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58049.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 72530215 is about 8516.4672840327. The cubic root of 72530215 is about 417.0354640538.

The spelling of 72530215 in words is "seventy-two million, five hundred thirty thousand, two hundred fifteen".