1305412444 has 24 divisors (see below), whose sum is σ = 2653628768. Its totient is φ = 550290240.

The previous prime is 1305412411. The next prime is 1305412457. The reversal of 1305412444 is 4442145031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380439 + ... + 383854.

Almost surely, 2^1305412444 is an apocalyptic number.

1305412444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1305412444 is an abundant number, since it is smaller than the sum of its proper divisors (1348216324).

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

1305412444 is a wasteful number, since it uses less digits than its factorization.

1305412444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764365 (or 764363 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1305412444 is about 36130.4918870474. The cubic root of 1305412444 is about 1092.9054276399.

Adding to 1305412444 its reverse (4442145031), we get a palindrome (5747557475).

The spelling of 1305412444 in words is "one billion, three hundred five million, four hundred twelve thousand, four hundred forty-four".