3840520 has 16 divisors (see below), whose sum is σ = 8641260. Its totient is φ = 1536192.

The previous prime is 3840503. The next prime is 3840523. The reversal of 3840520 is 250483.

It can be written as a sum of positive squares in 2 ways, for example, as 3709476 + 131044 = 1926^2 + 362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3840491 and 3840500.

It is not an unprimeable number, because it can be changed into a prime (3840523) 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, 47967 + ... + 48046.

Almost surely, 2^3840520 is an apocalyptic number.

It is an amenable number.

3840520 is an abundant number, since it is smaller than the sum of its proper divisors (4800740).

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

3840520 is a wasteful number, since it uses less digits than its factorization.

3840520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96024 (or 96020 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 3840520 is about 1959.7244704295. The cubic root of 3840520 is about 156.6017738387.

The spelling of 3840520 in words is "three million, eight hundred forty thousand, five hundred twenty".