3826581 has 32 divisors (see below), whose sum is σ = 6220800. Its totient is φ = 2062080.

The previous prime is 3826573. The next prime is 3826583. The reversal of 3826581 is 1856283.

It is a happy number.

It is not a de Polignac number, because 3826581 - 2³ = 3826573 is a prime.

It is a super-2 number, since 2×3826581² = 29285444299122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3826583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10480 + ... + 10838.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

Almost surely, 2^3826581 is an apocalyptic number.

It is an amenable number.

3826581 is a deficient number, since it is larger than the sum of its proper divisors (2394219).

3826581 is a wasteful number, since it uses less digits than its factorization.

3826581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its digits is 11520, while the sum is 33.

The square root of 3826581 is about 1956.1648703522. The cubic root of 3826581 is about 156.4120843919.

The spelling of 3826581 in words is "three million, eight hundred twenty-six thousand, five hundred eighty-one".