1233440 has 48 divisors (see below), whose sum is σ = 3143448. Its totient is φ = 454656.

The previous prime is 1233439. The next prime is 1233473. The reversal of 1233440 is 443321.

It can be written as a sum of positive squares in 4 ways, for example, as 839056 + 394384 = 916^2 + 628^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784 + ... + 2376.

2^1233440 is an apocalyptic number.

1233440 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 1233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571724).

1233440 is an abundant number, since it is smaller than the sum of its proper divisors (1910008).

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

1233440 is a wasteful number, since it uses less digits than its factorization.

1233440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1233440 is about 1110.6034395769. The cubic root of 1233440 is about 107.2439190355.

Adding to 1233440 its reverse (443321), we get a palindrome (1676761).

The spelling of 1233440 in words is "one million, two hundred thirty-three thousand, four hundred forty".