7223040 has 288 divisors, whose sum is σ = 29433600. Its totient is φ = 1658880.

The previous prime is 7223039. The next prime is 7223053. The reversal of 7223040 is 403227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380151 + ... + 380169.

It is an arithmetic number, because the mean of its divisors is an integer number (102200).

Almost surely, 2^7223040 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 7223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14716800).

7223040 is an abundant number, since it is smaller than the sum of its proper divisors (22210560).

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

7223040 is a wasteful number, since it uses less digits than its factorization.

7223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 7223040 is about 2687.5713944005. The cubic root of 7223040 is about 193.3036286771.

Adding to 7223040 its reverse (403227), we get a palindrome (7626267).

The spelling of 7223040 in words is "seven million, two hundred twenty-three thousand, forty".