7009220 has 24 divisors (see below), whose sum is σ = 14875224. Its totient is φ = 2774016.

The previous prime is 7009217. The next prime is 7009231. The reversal of 7009220 is 229007.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 6959044 = 224^2 + 2638^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7009192 and 7009201.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 134 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (619801).

Almost surely, 2^7009220 is an apocalyptic number.

It is an amenable number.

7009220 is an abundant number, since it is smaller than the sum of its proper divisors (7866004).

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

7009220 is a wasteful number, since it uses less digits than its factorization.

7009220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 7009220 is about 2647.4931539099. The cubic root of 7009220 is about 191.3770682181.

The spelling of 7009220 in words is "seven million, nine thousand, two hundred twenty".