2220172 has 6 divisors (see below), whose sum is σ = 3885308. Its totient is φ = 1110084.

The previous prime is 2220157. The next prime is 2220187. The reversal of 2220172 is 2710222.

It is an interprime number because it is at equal distance from previous prime (2220157) and next prime (2220187).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277518 + ... + 277525.

2^2220172 is an apocalyptic number.

It is an amenable number.

2220172 is a deficient number, since it is larger than the sum of its proper divisors (1665136).

2220172 is a wasteful number, since it uses less digits than its factorization.

2220172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555047 (or 555045 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2220172 is about 1490.0241608779. The cubic root of 2220172 is about 130.4554439476.

Adding to 2220172 its reverse (2710222), we get a palindrome (4930394).

The spelling of 2220172 in words is "two million, two hundred twenty thousand, one hundred seventy-two".