7740320 has 48 divisors (see below), whose sum is σ = 20901888. Its totient is φ = 2653440.

The previous prime is 7740319. The next prime is 7740323. The reversal of 7740320 is 230477.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7740323) 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, 2336 + ... + 4575.

It is an arithmetic number, because the mean of its divisors is an integer number (435456).

Almost surely, 2^7740320 is an apocalyptic number.

7740320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7740320 is an abundant number, since it is smaller than the sum of its proper divisors (13161568).

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

7740320 is a wasteful number, since it uses less digits than its factorization.

7740320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933 (or 6925 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 7740320 is about 2782.1430588667. The cubic root of 7740320 is about 197.8121539184.

Adding to 7740320 its reverse (230477), we get a palindrome (7970797).

The spelling of 7740320 in words is "seven million, seven hundred forty thousand, three hundred twenty".