326221240 has 16 divisors (see below), whose sum is σ = 733997880. Its totient is φ = 130488480.

The previous prime is 326221237. The next prime is 326221243. The reversal of 326221240 is 42122623.

It is an interprime number because it is at equal distance from previous prime (326221237) and next prime (326221243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326221243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077726 + ... + 4077805.

Almost surely, 2^326221240 is an apocalyptic number.

It is an amenable number.

326221240 is an abundant number, since it is smaller than the sum of its proper divisors (407776640).

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

326221240 is a wasteful number, since it uses less digits than its factorization.

326221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155542 (or 8155538 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 326221240 is about 18061.5957213088. The cubic root of 326221240 is about 688.3945310157.

Adding to 326221240 its reverse (42122623), we get a palindrome (368343863).

The spelling of 326221240 in words is "three hundred twenty-six million, two hundred twenty-one thousand, two hundred forty".