72215 has 16 divisors (see below), whose sum is σ = 102816. Its totient is φ = 48000.

The previous prime is 72211. The next prime is 72221. The reversal of 72215 is 51227.

It is not a de Polignac number, because 72215 - 2² = 72211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72193 and 72202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (6426).

2⁷²²¹⁵ is an apocalyptic number.

72215 is a deficient number, since it is larger than the sum of its proper divisors (30601).

72215 is a wasteful number, since it uses less digits than its factorization.

72215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130.

The product of its digits is 140, while the sum is 17.

The square root of 72215 is about 268.7284875111. The cubic root of 72215 is about 41.6430443880.

It can be divided in two parts, 722 and 15, that added together give a palindrome (737).

The spelling of 72215 in words is "seventy-two thousand, two hundred fifteen".