1326546720 has 384 divisors, whose sum is σ = 4999034880. Its totient is φ = 331444224.

The previous prime is 1326546713. The next prime is 1326546721. The reversal of 1326546720 is 276456231.

1326546720 is a `hidden beast` number, since 132 + 65 + 467 + 2 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1326546721) 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, 5948529 + ... + 5948751.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^1326546720 is an apocalyptic number.

1326546720 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 1326546720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2499517440).

1326546720 is an abundant number, since it is smaller than the sum of its proper divisors (3672488160).

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

1326546720 is an equidigital number, since it uses as much as digits as its factorization.

1326546720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1326546720 is about 36421.7890829102. The cubic root of 1326546720 is about 1098.7718303389.

The spelling of 1326546720 in words is "one billion, three hundred twenty-six million, five hundred forty-six thousand, seven hundred twenty".