1282220512 has 96 divisors (see below), whose sum is σ = 2784015360. Its totient is φ = 578672640.

The previous prime is 1282220507. The next prime is 1282220531. The reversal of 1282220512 is 2150222821.

It is a congruent number.

It is an unprimeable number.

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, 2343823 + ... + 2344369.

It is an arithmetic number, because the mean of its divisors is an integer number (29000160).

Almost surely, 2^1282220512 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 1282220512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392007680).

1282220512 is an abundant number, since it is smaller than the sum of its proper divisors (1501794848).

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

1282220512 is a wasteful number, since it uses less digits than its factorization.

1282220512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 1282220512 is about 35808.1067916191. The cubic root of 1282220512 is about 1086.3945377685.

The spelling of 1282220512 in words is "one billion, two hundred eighty-two million, two hundred twenty thousand, five hundred twelve".