7924228 has 12 divisors (see below), whose sum is σ = 14934220. Its totient is φ = 3657312.

The previous prime is 7924211. The next prime is 7924229. The reversal of 7924228 is 8224297.

It can be written as a sum of positive squares in 2 ways, for example, as 5161984 + 2762244 = 2272^2 + 1662^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7924193 and 7924202.

It is not an unprimeable number, because it can be changed into a prime (7924229) 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, 76143 + ... + 76246.

Almost surely, 2^7924228 is an apocalyptic number.

It is an amenable number.

7924228 is a deficient number, since it is larger than the sum of its proper divisors (7009992).

7924228 is a wasteful number, since it uses less digits than its factorization.

7924228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152406 (or 152404 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 7924228 is about 2815.0005328596. Note that the first 3 decimals coincide. The cubic root of 7924228 is about 199.3665625698.

The spelling of 7924228 in words is "seven million, nine hundred twenty-four thousand, two hundred twenty-eight".