1052440440 has 64 divisors (see below), whose sum is σ = 3294604800. Its totient is φ = 268447872.

The previous prime is 1052440423. The next prime is 1052440447. The reversal of 1052440440 is 440442501.

It is a happy number.

It is a super-2 number, since 2×1052440440² = 2215261759494787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1052440440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052440447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187900 + ... + 193419.

It is an arithmetic number, because the mean of its divisors is an integer number (51478200).

Almost surely, 2^1052440440 is an apocalyptic number.

1052440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052440440 is an abundant number, since it is smaller than the sum of its proper divisors (2242164360).

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

1052440440 is a wasteful number, since it uses less digits than its factorization.

1052440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381356 (or 381352 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1052440440 is about 32441.3384434120. The cubic root of 1052440440 is about 1017.1831933508.

Adding to 1052440440 its reverse (440442501), we get a palindrome (1492882941).

The spelling of 1052440440 in words is "one billion, fifty-two million, four hundred forty thousand, four hundred forty".