7430940 has 144 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 1788480.

The previous prime is 7430939. The next prime is 7430947. The reversal of 7430940 is 490347.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7430947) 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 47 ways as a sum of consecutive naturals, for example, 53391 + ... + 53529.

It is an arithmetic number, because the mean of its divisors is an integer number (178360).

Almost surely, 2^7430940 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 7430940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12841920).

7430940 is an abundant number, since it is smaller than the sum of its proper divisors (18252900).

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

7430940 is a wasteful number, since it uses less digits than its factorization.

7430940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7430940 is about 2725.9750549115. The cubic root of 7430940 is about 195.1407268188.

The spelling of 7430940 in words is "seven million, four hundred thirty thousand, nine hundred forty".