7222156 has 12 divisors (see below), whose sum is σ = 12846400. Its totient is φ = 3551760.

The previous prime is 7222153. The next prime is 7222177. The reversal of 7222156 is 6512227.

It is a self number, because there is not a number n which added to its sum of digits gives 7222156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14556 + ... + 15043.

Almost surely, 2^7222156 is an apocalyptic number.

It is an amenable number.

7222156 is a deficient number, since it is larger than the sum of its proper divisors (5624244).

7222156 is a wasteful number, since it uses less digits than its factorization.

7222156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29664 (or 29662 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 7222156 is about 2687.4069286210. The cubic root of 7222156 is about 193.2957424603.

The spelling of 7222156 in words is "seven million, two hundred twenty-two thousand, one hundred fifty-six".