326634140 has 48 divisors (see below), whose sum is σ = 789164544. Its totient is φ = 111240000.

The previous prime is 326634103. The next prime is 326634169. The reversal of 326634140 is 41436623.

326634140 = 155² + 156² + ... + 994².

It is a super-2 number, since 2×326634140² = 213379722827079200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 13415 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (16440928).

Almost surely, 2^326634140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326634140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394582272).

326634140 is an abundant number, since it is smaller than the sum of its proper divisors (462530404).

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

326634140 is a wasteful number, since it uses less digits than its factorization.

326634140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15618 (or 15616 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 326634140 is about 18073.0224367702. The cubic root of 326634140 is about 688.6848434690.

The spelling of 326634140 in words is "three hundred twenty-six million, six hundred thirty-four thousand, one hundred forty".