3681426 has 64 divisors (see below), whose sum is σ = 9105408. Its totient is φ = 969408.

The previous prime is 3681413. The next prime is 3681443. The reversal of 3681426 is 6241863.

It is a junction number, because it is equal to n+sod(n) for n = 3681393 and 3681402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35691 + ... + 35793.

It is an arithmetic number, because the mean of its divisors is an integer number (142272).

Almost surely, 2^3681426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3681426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4552704).

3681426 is an abundant number, since it is smaller than the sum of its proper divisors (5423982).

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

3681426 is a wasteful number, since it uses less digits than its factorization.

3681426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175.

The product of its digits is 6912, while the sum is 30.

The square root of 3681426 is about 1918.7042502689. The cubic root of 3681426 is about 154.4087919054.

The spelling of 3681426 in words is "three million, six hundred eighty-one thousand, four hundred twenty-six".