326226381 has 16 divisors (see below), whose sum is σ = 479855040. Its totient is φ = 195857280.

The previous prime is 326226347. The next prime is 326226391. The reversal of 326226381 is 183622623.

It is a happy number.

It is not a de Polignac number, because 326226381 - 2¹⁰ = 326225357 is a prime.

It is a super-2 number, since 2×326226381² = 212847303320714322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326226331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100411 + ... + 103608.

It is an arithmetic number, because the mean of its divisors is an integer number (29990940).

Almost surely, 2^326226381 is an apocalyptic number.

It is an amenable number.

326226381 is a deficient number, since it is larger than the sum of its proper divisors (153628659).

326226381 is a wasteful number, since it uses less digits than its factorization.

326226381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204076.

The product of its digits is 20736, while the sum is 33.

The square root of 326226381 is about 18061.7380392918. The cubic root of 326226381 is about 688.3981471891.

The spelling of 326226381 in words is "three hundred twenty-six million, two hundred twenty-six thousand, three hundred eighty-one".