1268838 has 16 divisors (see below), whose sum is σ = 2819760. Its totient is φ = 422928.

The previous prime is 1268807. The next prime is 1268843. The reversal of 1268838 is 8388621.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11695 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (176235).

2^1268838 is an apocalyptic number.

1268838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1268838 is an abundant number, since it is smaller than the sum of its proper divisors (1550922).

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

1268838 is a wasteful number, since it uses less digits than its factorization.

1268838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23508 (or 23502 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1268838 is about 1126.4270948446. The cubic root of 1268838 is about 108.2601751961.

The spelling of 1268838 in words is "one million, two hundred sixty-eight thousand, eight hundred thirty-eight".