7220490 has 32 divisors (see below), whose sum is σ = 17508096. Its totient is φ = 1905600.

The previous prime is 7220483. The next prime is 7220491. The reversal of 7220490 is 940227.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220490.

It is not an unprimeable number, because it can be changed into a prime (7220491) 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 15 ways as a sum of consecutive naturals, for example, 1839 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (547128).

Almost surely, 2^7220490 is an apocalyptic number.

7220490 is an abundant number, since it is smaller than the sum of its proper divisors (10287606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7220490 is a wasteful number, since it uses less digits than its factorization.

7220490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 7220490 is about 2687.0969465205. The cubic root of 7220490 is about 193.2808782253.

The spelling of 7220490 in words is "seven million, two hundred twenty thousand, four hundred ninety".