7440424 has 16 divisors (see below), whose sum is σ = 14771700. Its totient is φ = 3501312.

The previous prime is 7440421. The next prime is 7440427. The reversal of 7440424 is 4240447.

It is an interprime number because it is at equal distance from previous prime (7440421) and next prime (7440427).

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 52900 = 2718^2 + 230^2 .

It is not an unprimeable number, because it can be changed into a prime (7440421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27219 + ... + 27490.

Almost surely, 2^7440424 is an apocalyptic number.

It is an amenable number.

7440424 is a deficient number, since it is larger than the sum of its proper divisors (7331276).

7440424 is a wasteful number, since it uses less digits than its factorization.

7440424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54732 (or 54728 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 7440424 is about 2727.7140612608. The cubic root of 7440424 is about 195.2237099436.

The spelling of 7440424 in words is "seven million, four hundred forty thousand, four hundred twenty-four".