7402720 has 48 divisors (see below), whose sum is σ = 18839520. Its totient is φ = 2732544.

The previous prime is 7402709. The next prime is 7402721. The reversal of 7402720 is 272047.

It is a junction number, because it is equal to n+sod(n) for n = 7402691 and 7402700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7402721) 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 7 ways as a sum of consecutive naturals, for example, 301 + ... + 3859.

It is an arithmetic number, because the mean of its divisors is an integer number (392490).

Almost surely, 2^7402720 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 7402720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9419760).

7402720 is an abundant number, since it is smaller than the sum of its proper divisors (11436800).

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

7402720 is a wasteful number, since it uses less digits than its factorization.

7402720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 7402720 is about 2720.7940017576. The cubic root of 7402720 is about 194.8933890174.

Adding to 7402720 its reverse (272047), we get a palindrome (7674767).

It can be divided in two parts, 74027 and 20, that added together give a palindrome (74047).

The spelling of 7402720 in words is "seven million, four hundred two thousand, seven hundred twenty".