1244260416 has 56 divisors (see below), whose sum is σ = 3762410560. Its totient is φ = 355502592.

The previous prime is 1244260351. The next prime is 1244260439. The reversal of 1244260416 is 6140624421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461551 + ... + 464238.

Almost surely, 2^1244260416 is an apocalyptic number.

1244260416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1244260416 is an abundant number, since it is smaller than the sum of its proper divisors (2518150144).

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

1244260416 is an equidigital number, since it uses as much as digits as its factorization.

1244260416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925811 (or 925801 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1244260416 is about 35274.0756930639. The cubic root of 1244260416 is about 1075.5660738852.

Adding to 1244260416 its reverse (6140624421), we get a palindrome (7384884837).

The spelling of 1244260416 in words is "one billion, two hundred forty-four million, two hundred sixty thousand, four hundred sixteen".