3581426 has 4 divisors (see below), whose sum is σ = 5372142. Its totient is φ = 1790712.

The previous prime is 3581419. The next prime is 3581429. The reversal of 3581426 is 6241853.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2725801 + 855625 = 1651^2 + 925^2 .

It is a super-2 number, since 2×3581426² = 25653224386952, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3581429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895355 + ... + 895358.

Almost surely, 2^3581426 is an apocalyptic number.

3581426 is a deficient number, since it is larger than the sum of its proper divisors (1790716).

3581426 is a wasteful number, since it uses less digits than its factorization.

3581426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790715.

The product of its digits is 5760, while the sum is 29.

The square root of 3581426 is about 1892.4655875339. The cubic root of 3581426 is about 152.9978497996.

The spelling of 3581426 in words is "three million, five hundred eighty-one thousand, four hundred twenty-six".