3220215 has 16 divisors (see below), whose sum is σ = 5424000. Its totient is φ = 1626912.

The previous prime is 3220211. The next prime is 3220219. The reversal of 3220215 is 5120223.

It is an interprime number because it is at equal distance from previous prime (3220211) and next prime (3220219).

It is not a de Polignac number, because 3220215 - 2² = 3220211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

3220215 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3220194 and 3220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220211) 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, 5365 + ... + 5934.

It is an arithmetic number, because the mean of its divisors is an integer number (339000).

Almost surely, 2^3220215 is an apocalyptic number.

3220215 is a deficient number, since it is larger than the sum of its proper divisors (2203785).

3220215 is a wasteful number, since it uses less digits than its factorization.

3220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3220215 is about 1794.4957509005. The cubic root of 3220215 is about 147.6709117184.

Adding to 3220215 its reverse (5120223), we get a palindrome (8340438).

The spelling of 3220215 in words is "three million, two hundred twenty thousand, two hundred fifteen".