326631140 has 48 divisors (see below), whose sum is σ = 749770560. Its totient is φ = 118538880.

The previous prime is 326631091. The next prime is 326631143. The reversal of 326631140 is 41136623.

It is not an unprimeable number, because it can be changed into a prime (326631143) 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, 140306 + ... + 142614.

It is an arithmetic number, because the mean of its divisors is an integer number (15620220).

Almost surely, 2^326631140 is an apocalyptic number.

It is an amenable number.

326631140 is an abundant number, since it is smaller than the sum of its proper divisors (423139420).

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

326631140 is a wasteful number, since it uses less digits than its factorization.

326631140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 326631140 is about 18072.9394399472. The cubic root of 326631140 is about 688.6827350337.

Adding to 326631140 its reverse (41136623), we get a palindrome (367767763).

The spelling of 326631140 in words is "three hundred twenty-six million, six hundred thirty-one thousand, one hundred forty".