7828222 has 4 divisors (see below), whose sum is σ = 11742336. Its totient is φ = 3914110.

The previous prime is 7828217. The next prime is 7828237. The reversal of 7828222 is 2228287.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2228287 = 109 ⋅20443.

It is a super-2 number, since 2×7828222² = 122562119362568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957054 + ... + 1957057.

It is an arithmetic number, because the mean of its divisors is an integer number (2935584).

Almost surely, 2^7828222 is an apocalyptic number.

7828222 is a deficient number, since it is larger than the sum of its proper divisors (3914114).

7828222 is a wasteful number, since it uses less digits than its factorization.

7828222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914113.

The product of its digits is 7168, while the sum is 31.

The square root of 7828222 is about 2797.8959952078. The cubic root of 7828222 is about 198.5581469449.

The spelling of 7828222 in words is "seven million, eight hundred twenty-eight thousand, two hundred twenty-two".