7220890 has 16 divisors (see below), whose sum is σ = 13029408. Its totient is φ = 2881296.

The previous prime is 7220867. The next prime is 7220891. The reversal of 7220890 is 980227.

It is not an unprimeable number, because it can be changed into a prime (7220891) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5869 + ... + 6991.

It is an arithmetic number, because the mean of its divisors is an integer number (814338).

Almost surely, 2^7220890 is an apocalyptic number.

7220890 is a deficient number, since it is larger than the sum of its proper divisors (5808518).

7220890 is a wasteful number, since it uses less digits than its factorization.

7220890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7220890 is about 2687.1713752569. The cubic root of 7220890 is about 193.2844472778.

The spelling of 7220890 in words is "seven million, two hundred twenty thousand, eight hundred ninety".