7691920 has 20 divisors (see below), whose sum is σ = 17883900. Its totient is φ = 3076736.

The previous prime is 7691911. The next prime is 7691923. The reversal of 7691920 is 291967.

7691920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6012304 + 1679616 = 2452^2 + 1296^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7691923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47995 + ... + 48154.

It is an arithmetic number, because the mean of its divisors is an integer number (894195).

Almost surely, 2^7691920 is an apocalyptic number.

It is an amenable number.

7691920 is an abundant number, since it is smaller than the sum of its proper divisors (10191980).

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

7691920 is a wasteful number, since it uses less digits than its factorization.

7691920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96162 (or 96156 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 7691920 is about 2773.4310880208. The cubic root of 7691920 is about 197.3989869604.

The spelling of 7691920 in words is "seven million, six hundred ninety-one thousand, nine hundred twenty".