7404320 has 96 divisors (see below), whose sum is σ = 21845376. Its totient is φ = 2304000.

The previous prime is 7404307. The next prime is 7404337. The reversal of 7404320 is 234047.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 7404292 and 7404301.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12020 + ... + 12620.

It is an arithmetic number, because the mean of its divisors is an integer number (227556).

Almost surely, 2^7404320 is an apocalyptic number.

7404320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7404320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10922688).

7404320 is an abundant number, since it is smaller than the sum of its proper divisors (14441056).

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

7404320 is a wasteful number, since it uses less digits than its factorization.

7404320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 7404320 is about 2721.0880176870. The cubic root of 7404320 is about 194.9074292152.

Adding to 7404320 its reverse (234047), we get a palindrome (7638367).

The spelling of 7404320 in words is "seven million, four hundred four thousand, three hundred twenty".