3621444 has 24 divisors (see below), whose sum is σ = 8631168. Its totient is φ = 1181280.

The previous prime is 3621403. The next prime is 3621461. The reversal of 3621444 is 4441263.

It is a super-2 number, since 2×3621444² = 26229713290272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 2647 + ... + 3774.

It is an arithmetic number, because the mean of its divisors is an integer number (359632).

Almost surely, 2^3621444 is an apocalyptic number.

It is an amenable number.

3621444 is an abundant number, since it is smaller than the sum of its proper divisors (5009724).

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

3621444 is a wasteful number, since it uses less digits than its factorization.

3621444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475 (or 6473 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 3621444 is about 1903.0091959841. The cubic root of 3621444 is about 153.5655942361.

The spelling of 3621444 in words is "three million, six hundred twenty-one thousand, four hundred forty-four".