7022440 has 24 divisors (see below), whose sum is σ = 15838290. Its totient is φ = 2802272.

The previous prime is 7022417. The next prime is 7022441. The reversal of 7022440 is 442207.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 702244 = 2514^2 + 838^2 .

It is not an unprimeable number, because it can be changed into a prime (7022441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16551 + ... + 16969.

Almost surely, 2^7022440 is an apocalyptic number.

It is an amenable number.

7022440 is an abundant number, since it is smaller than the sum of its proper divisors (8815850).

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

7022440 is an equidigital number, since it uses as much as digits as its factorization.

7022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 7022440 is about 2649.9886792211. The cubic root of 7022440 is about 191.4973105990.

Adding to 7022440 its reverse (442207), we get a palindrome (7464647).

The spelling of 7022440 in words is "seven million, twenty-two thousand, four hundred forty".