1284486 has 48 divisors (see below), whose sum is σ = 3176496. Its totient is φ = 344064.

The previous prime is 1284473. The next prime is 1284487. The reversal of 1284486 is 6844821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284487) 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, 4870 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (66177).

2^1284486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588248).

1284486 is an abundant number, since it is smaller than the sum of its proper divisors (1892010).

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

1284486 is a wasteful number, since it uses less digits than its factorization.

1284486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 286 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 1284486 is about 1133.3516665184. The cubic root of 1284486 is about 108.7033992438.

It can be divided in two parts, 1284 and 486, that added together give a triangular number (1770 = T₅₉).

The spelling of 1284486 in words is "one million, two hundred eighty-four thousand, four hundred eighty-six".