1284215000 has 80 divisors (see below), whose sum is σ = 3039901920. Its totient is φ = 508400000.

The previous prime is 1284214993. The next prime is 1284215011. The reversal of 1284215000 is 5124821.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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 19 ways as a sum of consecutive naturals, for example, 503729 + ... + 506271.

It is an arithmetic number, because the mean of its divisors is an integer number (37998774).

Almost surely, 2^1284215000 is an apocalyptic number.

1284215000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284215000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519950960).

1284215000 is an abundant number, since it is smaller than the sum of its proper divisors (1755686920).

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

1284215000 is a wasteful number, since it uses less digits than its factorization.

1284215000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1284215000 is about 35835.9456412134. The cubic root of 1284215000 is about 1086.9575398251.

Adding to 1284215000 its reverse (5124821), we get a palindrome (1289339821).

The spelling of 1284215000 in words is "one billion, two hundred eighty-four million, two hundred fifteen thousand".