7221672 has 48 divisors (see below), whose sum is σ = 20592000. Its totient is φ = 2280096.

The previous prime is 7221661. The next prime is 7221689. The reversal of 7221672 is 2761227.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1272 + ... + 4007.

It is an arithmetic number, because the mean of its divisors is an integer number (429000).

Almost surely, 2^7221672 is an apocalyptic number.

7221672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7221672 is an abundant number, since it is smaller than the sum of its proper divisors (13370328).

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

7221672 is a wasteful number, since it uses less digits than its factorization.

7221672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310 (or 5303 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 7221672 is about 2687.3168774821. The cubic root of 7221672 is about 193.2914243947.

Adding to 7221672 its reverse (2761227), we get a palindrome (9982899).

The spelling of 7221672 in words is "seven million, two hundred twenty-one thousand, six hundred seventy-two".