7478222 has 4 divisors (see below), whose sum is σ = 11217336. Its totient is φ = 3739110.

The previous prime is 7478209. The next prime is 7478257. The reversal of 7478222 is 2228747.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1869554 + ... + 1869557.

It is an arithmetic number, because the mean of its divisors is an integer number (2804334).

Almost surely, 2^7478222 is an apocalyptic number.

7478222 is a deficient number, since it is larger than the sum of its proper divisors (3739114).

7478222 is a wasteful number, since it uses less digits than its factorization.

7478222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739113.

The product of its digits is 12544, while the sum is 32.

The square root of 7478222 is about 2734.6337963245. The cubic root of 7478222 is about 195.5537361851.

The spelling of 7478222 in words is "seven million, four hundred seventy-eight thousand, two hundred twenty-two".