1286236 has 24 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 542640.

The previous prime is 1286227. The next prime is 1286239. The reversal of 1286236 is 6326821.

1286236 = T₂₈₉ + T₂₉₀ + ... + T₃₁₆.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

2^1286236 is an apocalyptic number.

It is an amenable number.

1286236 is an abundant number, since it is smaller than the sum of its proper divisors (1326500).

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

1286236 is a wasteful number, since it uses less digits than its factorization.

1286236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 1286236 is about 1134.1234500706. The cubic root of 1286236 is about 108.7527431377.

The spelling of 1286236 in words is "one million, two hundred eighty-six thousand, two hundred thirty-six".