7220308 has 12 divisors (see below), whose sum is σ = 13378932. Its totient is φ = 3397760.

The previous prime is 7220299. The next prime is 7220347. The reversal of 7220308 is 8030227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 4717584 = 1582^2 + 2172^2 .

It is a super-2 number, since 2×7220308² = 104265695229728, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 53023 + ... + 53158.

It is an arithmetic number, because the mean of its divisors is an integer number (1114911).

Almost surely, 2^7220308 is an apocalyptic number.

It is an amenable number.

7220308 is a deficient number, since it is larger than the sum of its proper divisors (6158624).

7220308 is a wasteful number, since it uses less digits than its factorization.

7220308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106202 (or 106200 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7220308 is about 2687.0630807631. The cubic root of 7220308 is about 193.2792542627.

The spelling of 7220308 in words is "seven million, two hundred twenty thousand, three hundred eight".