1282785888 has 48 divisors (see below), whose sum is σ = 3372909120. Its totient is φ = 426884736.

The previous prime is 1282785863. The next prime is 1282785943. The reversal of 1282785888 is 8885872821.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 48631 + ... + 70217.

It is an arithmetic number, because the mean of its divisors is an integer number (70268940).

Almost surely, 2^1282785888 is an apocalyptic number.

It is an amenable number.

1282785888 is an abundant number, since it is smaller than the sum of its proper divisors (2090123232).

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

1282785888 is a wasteful number, since it uses less digits than its factorization.

1282785888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22219 (or 22211 counting only the distinct ones).

The product of its digits is 4587520, while the sum is 57.

The square root of 1282785888 is about 35816.0004467277. Note that the first 3 decimals coincide. The cubic root of 1282785888 is about 1086.5541907916.

The spelling of 1282785888 in words is "one billion, two hundred eighty-two million, seven hundred eighty-five thousand, eight hundred eighty-eight".