1286238 has 8 divisors (see below), whose sum is σ = 2572488. Its totient is φ = 428744.

The previous prime is 1286227. The next prime is 1286239. The reversal of 1286238 is 8326821.

It is a sphenic number, since it is the product of 3 distinct primes.

1286238 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 107181 + ... + 107192.

It is an arithmetic number, because the mean of its divisors is an integer number (321561).

2^1286238 is an apocalyptic number.

1286238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1286238 is a wasteful number, since it uses less digits than its factorization.

1286238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214378.

The product of its digits is 4608, while the sum is 30.

The square root of 1286238 is about 1134.1243318085. The cubic root of 1286238 is about 108.7527995052.

The spelling of 1286238 in words is "one million, two hundred eighty-six thousand, two hundred thirty-eight".