1284622056 has 96 divisors (see below), whose sum is σ = 3562846560. Its totient is φ = 417995136.

The previous prime is 1284622049. The next prime is 1284622057. The reversal of 1284622056 is 6502264821.

It is a happy number.

1284622056 is a `hidden beast` number, since 1 + 28 + 4 + 622 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1284622056.

It is not an unprimeable number, because it can be changed into a prime (1284622057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865491 + ... + 866973.

It is an arithmetic number, because the mean of its divisors is an integer number (37112985).

Almost surely, 2^1284622056 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 1284622056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781423280).

1284622056 is an abundant number, since it is smaller than the sum of its proper divisors (2278224504).

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

1284622056 is a wasteful number, since it uses less digits than its factorization.

1284622056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1284622056 is about 35841.6246283563. The cubic root of 1284622056 is about 1087.0723715443.

Adding to 1284622056 its reverse (6502264821), we get a palindrome (7786886877).

The spelling of 1284622056 in words is "one billion, two hundred eighty-four million, six hundred twenty-two thousand, fifty-six".