1312256448 has 84 divisors (see below), whose sum is σ = 3766340448. Its totient is φ = 436838400.

The previous prime is 1312256419. The next prime is 1312256483. The reversal of 1312256448 is 8446522131.

It is a happy number.

1312256448 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 2 + 5 + 644 + 8 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818848 + ... + 820448.

Almost surely, 2^1312256448 is an apocalyptic number.

1312256448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312256448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1883170224).

1312256448 is an abundant number, since it is smaller than the sum of its proper divisors (2454084000).

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

1312256448 is a wasteful number, since it uses less digits than its factorization.

1312256448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042 (or 3029 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1312256448 is about 36225.0803725816. The cubic root of 1312256448 is about 1094.8120575670.

Adding to 1312256448 its reverse (8446522131), we get a palindrome (9758778579).

It can be divided in two parts, 13122 and 56448, that multiplied together give a square (740710656 = 27216²).

The spelling of 1312256448 in words is "one billion, three hundred twelve million, two hundred fifty-six thousand, four hundred forty-eight".