7145224 has 16 divisors (see below), whose sum is σ = 13709520. Its totient is φ = 3489360.

The previous prime is 7145209. The next prime is 7145231. The reversal of 7145224 is 4225417.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10042 + ... + 10729.

It is an arithmetic number, because the mean of its divisors is an integer number (856845).

Almost surely, 2^7145224 is an apocalyptic number.

It is an amenable number.

7145224 is a deficient number, since it is larger than the sum of its proper divisors (6564296).

7145224 is a wasteful number, since it uses less digits than its factorization.

7145224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20820 (or 20816 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 7145224 is about 2673.0551808745. The cubic root of 7145224 is about 192.6069479365.

The spelling of 7145224 in words is "seven million, one hundred forty-five thousand, two hundred twenty-four".