1326238680 has 256 divisors, whose sum is σ = 4646315520. Its totient is φ = 299851776.

The previous prime is 1326238651. The next prime is 1326238687. The reversal of 1326238680 is 868326231.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326238687) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1139779 + ... + 1140941.

It is an arithmetic number, because the mean of its divisors is an integer number (18149670).

Almost surely, 2^1326238680 is an apocalyptic number.

1326238680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326238680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323157760).

1326238680 is an abundant number, since it is smaller than the sum of its proper divisors (3320076840).

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

1326238680 is a wasteful number, since it uses less digits than its factorization.

1326238680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 1326238680 is about 36417.5600500638. The cubic root of 1326238680 is about 1098.6867744386.

The spelling of 1326238680 in words is "one billion, three hundred twenty-six million, two hundred thirty-eight thousand, six hundred eighty".