1240824 has 64 divisors (see below), whose sum is σ = 3457440. Its totient is φ = 368640.

The previous prime is 1240817. The next prime is 1240831. The reversal of 1240824 is 4280421.

It is an interprime number because it is at equal distance from previous prime (1240817) and next prime (1240831).

It is a self number, because there is not a number n which added to its sum of digits gives 1240824.

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 15 ways as a sum of consecutive naturals, for example, 12744 + ... + 12840.

2^1240824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728720).

1240824 is an abundant number, since it is smaller than the sum of its proper divisors (2216616).

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

1240824 is a wasteful number, since it uses less digits than its factorization.

1240824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1240824 is about 1113.9227980430. The cubic root of 1240824 is about 107.4574989734.

It can be divided in two parts, 12408 and 24, that multiplied together give a palindrome (297792).

The spelling of 1240824 in words is "one million, two hundred forty thousand, eight hundred twenty-four".