7288215 has 16 divisors (see below), whose sum is σ = 12721536. Its totient is φ = 3533600.

The previous prime is 7288213. The next prime is 7288231. The reversal of 7288215 is 5128827.

It is not a de Polignac number, because 7288215 - 2¹ = 7288213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7288213) 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, 21921 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (795096).

Almost surely, 2^7288215 is an apocalyptic number.

7288215 is a deficient number, since it is larger than the sum of its proper divisors (5433321).

7288215 is a wasteful number, since it uses less digits than its factorization.

7288215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44190.

The product of its digits is 8960, while the sum is 33.

The square root of 7288215 is about 2699.6694242073. The cubic root of 7288215 is about 193.8832950253.

It can be divided in two parts, 7288 and 215, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 7288215 in words is "seven million, two hundred eighty-eight thousand, two hundred fifteen".