1326273408 has 96 divisors (see below), whose sum is σ = 3828108960. Its totient is φ = 440745984.

The previous prime is 1326273391. The next prime is 1326273427. The reversal of 1326273408 is 8043726231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421216 + ... + 424352.

It is an arithmetic number, because the mean of its divisors is an integer number (39876135).

Almost surely, 2^1326273408 is an apocalyptic number.

1326273408 is a gapful number since it is divisible by the number (18) 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 1326273408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914054480).

1326273408 is an abundant number, since it is smaller than the sum of its proper divisors (2501835552).

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

1326273408 is a wasteful number, since it uses less digits than its factorization.

1326273408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1326273408 is about 36418.0368498907. The cubic root of 1326273408 is about 1098.6963641809.

Adding to 1326273408 its reverse (8043726231), we get a palindrome (9369999639).

The spelling of 1326273408 in words is "one billion, three hundred twenty-six million, two hundred seventy-three thousand, four hundred eight".