1284888 has 64 divisors (see below), whose sum is σ = 3640320. Its totient is φ = 374400.

The previous prime is 1284863. The next prime is 1284889. The reversal of 1284888 is 8884821.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8106 + ... + 8262.

It is an arithmetic number, because the mean of its divisors is an integer number (56880).

2^1284888 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 1284888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820160).

1284888 is an abundant number, since it is smaller than the sum of its proper divisors (2355432).

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

1284888 is a wasteful number, since it uses less digits than its factorization.

1284888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 204 counting only the distinct ones).

The product of its digits is 32768, while the sum is 39.

The square root of 1284888 is about 1133.5290027167. The cubic root of 1284888 is about 108.7147382044.

The spelling of 1284888 in words is "one million, two hundred eighty-four thousand, eight hundred eighty-eight".