7223140 has 48 divisors (see below), whose sum is σ = 16011072. Its totient is φ = 2733696.

The previous prime is 7223137. The next prime is 7223143. The reversal of 7223140 is 413227.

It is an interprime number because it is at equal distance from previous prime (7223137) and next prime (7223143).

It is a super-3 number, since 3×7223140³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7223143) 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, 31707 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (333564).

Almost surely, 2^7223140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7223140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8005536).

7223140 is an abundant number, since it is smaller than the sum of its proper divisors (8787932).

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

7223140 is a wasteful number, since it uses less digits than its factorization.

7223140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 7223140 is about 2687.5899984931. The cubic root of 7223140 is about 193.3045207426.

Adding to 7223140 its reverse (413227), we get a palindrome (7636367).

The spelling of 7223140 in words is "seven million, two hundred twenty-three thousand, one hundred forty".