73215 has 12 divisors (see below), whose sum is σ = 126984. Its totient is φ = 39024.

The previous prime is 73189. The next prime is 73237. The reversal of 73215 is 51237.

73215 = 119² + 120² + ... + 123².

It is not a de Polignac number, because 73215 - 2⁸ = 72959 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 73215.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 769 + ... + 858.

It is an arithmetic number, because the mean of its divisors is an integer number (10582).

2⁷³²¹⁵ is an apocalyptic number.

73215 is a deficient number, since it is larger than the sum of its proper divisors (53769).

73215 is a wasteful number, since it uses less digits than its factorization.

73215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1635 counting only the distinct ones).

The product of its digits is 210, while the sum is 18.

The square root of 73215 is about 270.5827045471. The cubic root of 73215 is about 41.8343817913.

It can be divided in two parts, 732 and 15, that added together give a palindrome (747).

The spelling of 73215 in words is "seventy-three thousand, two hundred fifteen".