7742320 has 20 divisors (see below), whose sum is σ = 18001080. Its totient is φ = 3096896.

The previous prime is 7742309. The next prime is 7742321. The reversal of 7742320 is 232477.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7742321) 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 3 ways as a sum of consecutive naturals, for example, 48310 + ... + 48469.

It is an arithmetic number, because the mean of its divisors is an integer number (900054).

Almost surely, 2^7742320 is an apocalyptic number.

It is an amenable number.

7742320 is an abundant number, since it is smaller than the sum of its proper divisors (10258760).

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

7742320 is a wasteful number, since it uses less digits than its factorization.

7742320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96792 (or 96786 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 7742320 is about 2782.5024707985. The cubic root of 7742320 is about 197.8291898307.

Adding to 7742320 its reverse (232477), we get a palindrome (7974797).

The spelling of 7742320 in words is "seven million, seven hundred forty-two thousand, three hundred twenty".