1281774048 has 96 divisors (see below), whose sum is σ = 3608841600. Its totient is φ = 397103616.

The previous prime is 1281774047. The next prime is 1281774049. The reversal of 1281774048 is 8404771821.

It is an interprime number because it is at equal distance from previous prime (1281774047) and next prime (1281774049).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281774047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90043 + ... + 103301.

It is an arithmetic number, because the mean of its divisors is an integer number (37592100).

Almost surely, 2^1281774048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281774048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1804420800).

1281774048 is an abundant number, since it is smaller than the sum of its proper divisors (2327067552).

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

1281774048 is a wasteful number, since it uses less digits than its factorization.

1281774048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13344 (or 13336 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 1281774048 is about 35801.8721298203. The cubic root of 1281774048 is about 1086.2684304016.

The spelling of 1281774048 in words is "one billion, two hundred eighty-one million, seven hundred seventy-four thousand, forty-eight".