1326240 has 96 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 352512.

The previous prime is 1326239. The next prime is 1326251. The reversal of 1326240 is 426231.

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 (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2^1326240 is an apocalyptic number.

1326240 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 1326240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328480).

1326240 is an abundant number, since it is smaller than the sum of its proper divisors (3330720).

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

1326240 is a wasteful number, since it uses less digits than its factorization.

1326240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1326240 is about 1151.6249389450. The cubic root of 1326240 is about 109.8687138945.

Subtracting from 1326240 its reverse (426231), we obtain a palindrome (900009).

The spelling of 1326240 in words is "one million, three hundred twenty-six thousand, two hundred forty".