3805000 has 40 divisors (see below), whose sum is σ = 8926830. Its totient is φ = 1520000.

The previous prime is 3804989. The next prime is 3805001. The reversal of 3805000 is 5083.

It can be written as a sum of positive squares in 5 ways, for example, as 248004 + 3556996 = 498^2 + 1886^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3805001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4620 + ... + 5380.

Almost surely, 2^3805000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4463415).

3805000 is an abundant number, since it is smaller than the sum of its proper divisors (5121830).

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

3805000 is an equidigital number, since it uses as much as digits as its factorization.

3805000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3805000 is about 1950.6409203131. The cubic root of 3805000 is about 156.1174876508.

The spelling of 3805000 in words is "three million, eight hundred five thousand".