1286724 has 12 divisors (see below), whose sum is σ = 3002384. Its totient is φ = 428904.

The previous prime is 1286711. The next prime is 1286773. The reversal of 1286724 is 4276821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1286691 and 1286700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53602 + ... + 53625.

2^1286724 is an apocalyptic number.

It is an amenable number.

1286724 is an abundant number, since it is smaller than the sum of its proper divisors (1715660).

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

1286724 is a wasteful number, since it uses less digits than its factorization.

1286724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107234 (or 107232 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 1286724 is about 1134.3385737953. The cubic root of 1286724 is about 108.7664950537.

It can be divided in two parts, 12 and 86724, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 1286724 in words is "one million, two hundred eighty-six thousand, seven hundred twenty-four".