7022640 has 80 divisors (see below), whose sum is σ = 22543200. Its totient is φ = 1806336.

The previous prime is 7022629. The next prime is 7022641. The reversal of 7022640 is 462207.

It is a happy number.

7022640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (7022641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6456 + ... + 7464.

It is an arithmetic number, because the mean of its divisors is an integer number (281790).

Almost surely, 2^7022640 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 7022640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11271600).

7022640 is an abundant number, since it is smaller than the sum of its proper divisors (15520560).

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

7022640 is a wasteful number, since it uses less digits than its factorization.

7022640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 7022640 is about 2650.0264149627. The cubic root of 7022640 is about 191.4991285378.

Adding to 7022640 its reverse (462207), we get a palindrome (7484847).

The spelling of 7022640 in words is "seven million, twenty-two thousand, six hundred forty".