7440426 has 24 divisors (see below), whose sum is σ = 18424224. Its totient is φ = 2125800.

The previous prime is 7440421. The next prime is 7440427. The reversal of 7440426 is 6240447.

It is a super-2 number, since 2×7440426² = 110719878122952, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7440426.

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 11 ways as a sum of consecutive naturals, for example, 29400 + ... + 29651.

It is an arithmetic number, because the mean of its divisors is an integer number (767676).

Almost surely, 2^7440426 is an apocalyptic number.

7440426 is an abundant number, since it is smaller than the sum of its proper divisors (10983798).

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

7440426 is a wasteful number, since it uses less digits than its factorization.

7440426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59066 (or 59063 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 7440426 is about 2727.7144278681. The cubic root of 7440426 is about 195.2237274357.

The spelling of 7440426 in words is "seven million, four hundred forty thousand, four hundred twenty-six".