1152440 has 32 divisors (see below), whose sum is σ = 2652480. Its totient is φ = 450432.

The previous prime is 1152421. The next prime is 1152493. The reversal of 1152440 is 442511.

1152440 = 133² + 134² + ... + 179².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (82890).

2^1152440 is an apocalyptic number.

1152440 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 1152440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326240).

1152440 is an abundant number, since it is smaller than the sum of its proper divisors (1500040).

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

1152440 is a wasteful number, since it uses less digits than its factorization.

1152440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1152440 is about 1073.5175825295. The cubic root of 1152440 is about 104.8430004377.

Adding to 1152440 its reverse (442511), we get a palindrome (1594951).

The spelling of 1152440 in words is "one million, one hundred fifty-two thousand, four hundred forty".