1282785450 has 96 divisors (see below), whose sum is σ = 3281040000. Its totient is φ = 331468800.

The previous prime is 1282785403. The next prime is 1282785451. The reversal of 1282785450 is 545872821.

It is not an unprimeable number, because it can be changed into a prime (1282785451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1026426 + ... + 1027674.

It is an arithmetic number, because the mean of its divisors is an integer number (34177500).

Almost surely, 2^1282785450 is an apocalyptic number.

1282785450 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 1282785450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640520000).

1282785450 is an abundant number, since it is smaller than the sum of its proper divisors (1998254550).

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

1282785450 is a wasteful number, since it uses less digits than its factorization.

1282785450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 1282785450 is about 35815.9943321416. The cubic root of 1282785450 is about 1086.5540671257.

The spelling of 1282785450 in words is "one billion, two hundred eighty-two million, seven hundred eighty-five thousand, four hundred fifty".