1322240 has 36 divisors (see below), whose sum is σ = 3170244. Its totient is φ = 528384.

The previous prime is 1322227. The next prime is 1322257. The reversal of 1322240 is 422231.

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 369664 = 976^2 + 608^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764 + ... + 1796.

2^1322240 is an apocalyptic number.

1322240 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 1322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585122).

1322240 is an abundant number, since it is smaller than the sum of its proper divisors (1848004).

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

1322240 is an equidigital number, since it uses as much as digits as its factorization.

1322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1322240 is about 1149.8869509652. The cubic root of 1322240 is about 109.7581463193.

Adding to 1322240 its reverse (422231), we get a palindrome (1744471).

Subtracting from 1322240 its reverse (422231), we obtain a palindrome (900009).

The spelling of 1322240 in words is "one million, three hundred twenty-two thousand, two hundred forty".