3845780 has 24 divisors (see below), whose sum is σ = 8296008. Its totient is φ = 1496448.

The previous prime is 3845753. The next prime is 3845837. The reversal of 3845780 is 875483.

It can be written as a sum of positive squares in 4 ways, for example, as 976144 + 2869636 = 988^2 + 1694^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3845780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859 + ... + 3338.

It is an arithmetic number, because the mean of its divisors is an integer number (345667).

Almost surely, 2^3845780 is an apocalyptic number.

It is an amenable number.

3845780 is an abundant number, since it is smaller than the sum of its proper divisors (4450228).

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

3845780 is a wasteful number, since it uses less digits than its factorization.

3845780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243 (or 5241 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 3845780 is about 1961.0660366240. The cubic root of 3845780 is about 156.6732354773.

The spelling of 3845780 in words is "three million, eight hundred forty-five thousand, seven hundred eighty".