1286460 has 72 divisors (see below), whose sum is σ = 4464096. Its totient is φ = 293760.

The previous prime is 1286447. The next prime is 1286489. The reversal of 1286460 is 646821.

1286460 is a `hidden beast` number, since 12 + 8 + 646 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 750 + ... + 1770.

2^1286460 is an apocalyptic number.

1286460 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 1286460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232048).

1286460 is an abundant number, since it is smaller than the sum of its proper divisors (3177636).

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

1286460 is a wasteful number, since it uses less digits than its factorization.

1286460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1286460 is about 1134.2222004528. Note that the first 4 decimals coincide. The cubic root of 1286460 is about 108.7590559244.

It can be divided in two parts, 12 and 86460, that multiplied together give a triangular number (1037520 = T₁₄₄₀).

The spelling of 1286460 in words is "one million, two hundred eighty-six thousand, four hundred sixty".