1326235680 has 576 divisors, whose sum is σ = 5864721408. Its totient is φ = 274959360.

The previous prime is 1326235679. The next prime is 1326235693. The reversal of 1326235680 is 865326231.

It is a happy number.

1326235680 is a `hidden beast` number, since 1 + 32 + 62 + 3 + 568 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2993539 + ... + 2993981.

It is an arithmetic number, because the mean of its divisors is an integer number (10181808).

Almost surely, 2^1326235680 is an apocalyptic number.

1326235680 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 1326235680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2932360704).

1326235680 is an abundant number, since it is smaller than the sum of its proper divisors (4538485728).

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

1326235680 is a wasteful number, since it uses less digits than its factorization.

1326235680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1326235680 is about 36417.5188611196. The cubic root of 1326235680 is about 1098.6859460149.

The spelling of 1326235680 in words is "one billion, three hundred twenty-six million, two hundred thirty-five thousand, six hundred eighty".