1326726240 has 192 divisors, whose sum is σ = 5057385984. Its totient is φ = 285401088.

The previous prime is 1326726217. The next prime is 1326726241. The reversal of 1326726240 is 426276231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326726241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45507 + ... + 68733.

It is an arithmetic number, because the mean of its divisors is an integer number (26340552).

Almost surely, 2^1326726240 is an apocalyptic number.

1326726240 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 1326726240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528692992).

1326726240 is an abundant number, since it is smaller than the sum of its proper divisors (3730659744).

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

1326726240 is a wasteful number, since it uses less digits than its factorization.

1326726240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23269 (or 23261 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 1326726240 is about 36424.2534583758. The cubic root of 1326726240 is about 1098.8213932677.

The spelling of 1326726240 in words is "one billion, three hundred twenty-six million, seven hundred twenty-six thousand, two hundred forty".