7221498 has 32 divisors (see below), whose sum is σ = 15494976. Its totient is φ = 2235648.

The previous prime is 7221457. The next prime is 7221499. The reversal of 7221498 is 8941227.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7221499) 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 15 ways as a sum of consecutive naturals, for example, 8040 + ... + 8892.

It is an arithmetic number, because the mean of its divisors is an integer number (484218).

Almost surely, 2^7221498 is an apocalyptic number.

7221498 is an abundant number, since it is smaller than the sum of its proper divisors (8273478).

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

7221498 is a wasteful number, since it uses less digits than its factorization.

7221498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958.

The product of its digits is 8064, while the sum is 33.

The square root of 7221498 is about 2687.2845029881. The cubic root of 7221498 is about 193.2898719851.

The spelling of 7221498 in words is "seven million, two hundred twenty-one thousand, four hundred ninety-eight".