3821636 has 24 divisors (see below), whose sum is σ = 8232000. Its totient is φ = 1511712.

The previous prime is 3821633. The next prime is 3821639. The reversal of 3821636 is 6361283.

It is an interprime number because it is at equal distance from previous prime (3821633) and next prime (3821639).

It is a junction number, because it is equal to n+sod(n) for n = 3821599 and 3821608.

It is not an unprimeable number, because it can be changed into a prime (3821633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4886 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (343000).

Almost surely, 2^3821636 is an apocalyptic number.

It is an amenable number.

3821636 is an abundant number, since it is smaller than the sum of its proper divisors (4410364).

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

3821636 is a wasteful number, since it uses less digits than its factorization.

3821636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10523 (or 10521 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 3821636 is about 1954.9005089774. The cubic root of 3821636 is about 156.3446794709.

The spelling of 3821636 in words is "three million, eight hundred twenty-one thousand, six hundred thirty-six".