7224156 has 18 divisors (see below), whose sum is σ = 18261152. Its totient is φ = 2408040.

The previous prime is 7224149. The next prime is 7224181. The reversal of 7224156 is 6514227.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100300 + ... + 100371.

Almost surely, 2^7224156 is an apocalyptic number.

It is an amenable number.

7224156 is an abundant number, since it is smaller than the sum of its proper divisors (11036996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7224156 is a wasteful number, since it uses less digits than its factorization.

7224156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200681 (or 200676 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7224156 is about 2687.7790087729. The cubic root of 7224156 is about 193.3135836610.

The spelling of 7224156 in words is "seven million, two hundred twenty-four thousand, one hundred fifty-six".