3806825840 has 40 divisors (see below), whose sum is σ = 8866695888. Its totient is φ = 1520007680.

The previous prime is 3806825839. The next prime is 3806825873. The reversal of 3806825840 is 485286083.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3806825791 and 3806825800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780 + ... + 87300.

Almost surely, 2^3806825840 is an apocalyptic number.

It is an amenable number.

3806825840 is an abundant number, since it is smaller than the sum of its proper divisors (5059870048).

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

3806825840 is a wasteful number, since it uses less digits than its factorization.

3806825840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85097 (or 85091 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 3806825840 is about 61699.4800626391. The cubic root of 3806825840 is about 1561.4245479690.

The spelling of 3806825840 in words is "three billion, eight hundred six million, eight hundred twenty-five thousand, eight hundred forty".