7120440 has 128 divisors (see below), whose sum is σ = 25056000. Its totient is φ = 1793664.

The previous prime is 7120423. The next prime is 7120447. The reversal of 7120440 is 440217.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7120447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20347 + ... + 20693.

It is an arithmetic number, because the mean of its divisors is an integer number (195750).

Almost surely, 2^7120440 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 7120440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12528000).

7120440 is an abundant number, since it is smaller than the sum of its proper divisors (17935560).

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

7120440 is a wasteful number, since it uses less digits than its factorization.

7120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 7120440 is about 2668.4152600373. The cubic root of 7120440 is about 192.3839971245.

Adding to 7120440 its reverse (440217), we get a palindrome (7560657).

The spelling of 7120440 in words is "seven million, one hundred twenty thousand, four hundred forty".