1252984440 has 64 divisors (see below), whose sum is σ = 3888583200. Its totient is φ = 322606592.

The previous prime is 1252984433. The next prime is 1252984441. The reversal of 1252984440 is 444892521.

It is a super-2 number, since 2×1252984440² = 3139940013764227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252984441) 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, 176547 + ... + 183506.

Almost surely, 2^1252984440 is an apocalyptic number.

1252984440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252984440 is an abundant number, since it is smaller than the sum of its proper divisors (2635598760).

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

1252984440 is a wasteful number, since it uses less digits than its factorization.

1252984440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360096 (or 360092 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1252984440 is about 35397.5202521307. The cubic root of 1252984440 is about 1078.0739677756.

It can be divided in two parts, 12529 and 84440, that added together give a palindrome (96969).

The spelling of 1252984440 in words is "one billion, two hundred fifty-two million, nine hundred eighty-four thousand, four hundred forty".