1263486 has 32 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 354816.

The previous prime is 1263473. The next prime is 1263487. The reversal of 1263486 is 6843621.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263487) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2590 + ... + 3038.

It is an arithmetic number, because the mean of its divisors is an integer number (91800).

2^1263486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468800).

1263486 is an abundant number, since it is smaller than the sum of its proper divisors (1674114).

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

1263486 is a wasteful number, since it uses less digits than its factorization.

1263486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 6912, while the sum is 30.

The square root of 1263486 is about 1124.0489313193. The cubic root of 1263486 is about 108.1077456959.

It can be divided in two parts, 12634 and 86, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 1263486 in words is "one million, two hundred sixty-three thousand, four hundred eighty-six".