1284025236 has 96 divisors (see below), whose sum is σ = 3344732160. Its totient is φ = 380854656.

The previous prime is 1284025229. The next prime is 1284025277. The reversal of 1284025236 is 6325204821.

It is a junction number, because it is equal to n+sod(n) for n = 1284025197 and 1284025206.

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 31 ways as a sum of consecutive naturals, for example, 528721 + ... + 531143.

It is an arithmetic number, because the mean of its divisors is an integer number (34840960).

Almost surely, 2^1284025236 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 1284025236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672366080).

1284025236 is an abundant number, since it is smaller than the sum of its proper divisors (2060706924).

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

1284025236 is a wasteful number, since it uses less digits than its factorization.

1284025236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1284025236 is about 35833.2978666491. The cubic root of 1284025236 is about 1086.9039985383.

The spelling of 1284025236 in words is "one billion, two hundred eighty-four million, twenty-five thousand, two hundred thirty-six".