1326120810 has 96 divisors (see below), whose sum is σ = 3792785472. Its totient is φ = 295706880.

The previous prime is 1326120799. The next prime is 1326120823. The reversal of 1326120810 is 180216231.

It is a super-3 number, since 3×1326120810³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49269 + ... + 71271.

It is an arithmetic number, because the mean of its divisors is an integer number (39508182).

Almost surely, 2^1326120810 is an apocalyptic number.

1326120810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326120810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1896392736).

1326120810 is an abundant number, since it is smaller than the sum of its proper divisors (2466664662).

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

1326120810 is a wasteful number, since it uses less digits than its factorization.

1326120810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22068 (or 22061 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1326120810 is about 36415.9417014032. The cubic root of 1326120810 is about 1098.6542247302.

The spelling of 1326120810 in words is "one billion, three hundred twenty-six million, one hundred twenty thousand, eight hundred ten".