1281048210 has 240 divisors, whose sum is σ = 3926698776. Its totient is φ = 297851904.

The previous prime is 1281048193. The next prime is 1281048221. The reversal of 1281048210 is 128401821.

1281048210 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 649179441 + 631868769 = 25479^2 + 25137^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3801162 + ... + 3801498.

Almost surely, 2^1281048210 is an apocalyptic number.

1281048210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281048210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1963349388).

1281048210 is an abundant number, since it is smaller than the sum of its proper divisors (2645650566).

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

1281048210 is a wasteful number, since it uses less digits than its factorization.

1281048210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1281048210 is about 35791.7338222110. The cubic root of 1281048210 is about 1086.0633490716.

The spelling of 1281048210 in words is "one billion, two hundred eighty-one million, forty-eight thousand, two hundred ten".