7221476 has 6 divisors (see below), whose sum is σ = 12637590. Its totient is φ = 3610736.

The previous prime is 7221457. The next prime is 7221499. The reversal of 7221476 is 6741227.

7221476 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5953600 + 1267876 = 2440^2 + 1126^2 .

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 as a sum of consecutive naturals, namely, 902681 + ... + 902688.

It is an arithmetic number, because the mean of its divisors is an integer number (2106265).

Almost surely, 2^7221476 is an apocalyptic number.

It is an amenable number.

7221476 is a deficient number, since it is larger than the sum of its proper divisors (5416114).

7221476 is a wasteful number, since it uses less digits than its factorization.

7221476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805373 (or 1805371 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 7221476 is about 2687.2804096335. The cubic root of 7221476 is about 193.2896757017.

Subtracting from 7221476 its reverse (6741227), we obtain a square (480249 = 693²).

The spelling of 7221476 in words is "seven million, two hundred twenty-one thousand, four hundred seventy-six".