7222028 has 24 divisors (see below), whose sum is σ = 13891584. Its totient is φ = 3258000.

The previous prime is 7222021. The next prime is 7222031. The reversal of 7222028 is 8202227.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7221994 and 7222012.

It is not an unprimeable number, because it can be changed into a prime (7222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6101 + ... + 7187.

It is an arithmetic number, because the mean of its divisors is an integer number (578816).

Almost surely, 2^7222028 is an apocalyptic number.

It is an amenable number.

7222028 is a deficient number, since it is larger than the sum of its proper divisors (6669556).

7222028 is a wasteful number, since it uses less digits than its factorization.

7222028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 7222028 is about 2687.3831137372. The cubic root of 7222028 is about 193.2946005113.

The spelling of 7222028 in words is "seven million, two hundred twenty-two thousand, twenty-eight".