1424444240 has 20 divisors (see below), whose sum is σ = 3311833044. Its totient is φ = 569777664.

The previous prime is 1424444233. The next prime is 1424444251. The reversal of 1424444240 is 424444241.

It can be written as a sum of positive squares in 2 ways, for example, as 727273024 + 697171216 = 26968^2 + 26404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8902697 + ... + 8902856.

Almost surely, 2^1424444240 is an apocalyptic number.

1424444240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1424444240 is an abundant number, since it is smaller than the sum of its proper divisors (1887388804).

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

1424444240 is a wasteful number, since it uses less digits than its factorization.

1424444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805566 (or 17805560 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

The square root of 1424444240 is about 37741.8102374542. The cubic root of 1424444240 is about 1125.1622455713.

Adding to 1424444240 its reverse (424444241), we get a palindrome (1848888481).

Subtracting from 1424444240 its reverse (424444241), we obtain a palindrome (999999999).

The spelling of 1424444240 in words is "one billion, four hundred twenty-four million, four hundred forty-four thousand, two hundred forty".