326256140 has 96 divisors (see below), whose sum is σ = 807045120. Its totient is φ = 108474624.

The previous prime is 326256137. The next prime is 326256143. The reversal of 326256140 is 41652623.

It is an interprime number because it is at equal distance from previous prime (326256137) and next prime (326256143).

It is not an unprimeable number, because it can be changed into a prime (326256143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1177682 + ... + 1177958.

It is an arithmetic number, because the mean of its divisors is an integer number (8406720).

Almost surely, 2^326256140 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 326256140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403522560).

326256140 is an abundant number, since it is smaller than the sum of its proper divisors (480788980).

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

326256140 is a wasteful number, since it uses less digits than its factorization.

326256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 326256140 is about 18062.5618338042. The cubic root of 326256140 is about 688.4190788884.

The spelling of 326256140 in words is "three hundred twenty-six million, two hundred fifty-six thousand, one hundred forty".