1283868 has 36 divisors (see below), whose sum is σ = 3417960. Its totient is φ = 405216.

The previous prime is 1283839. The next prime is 1283873. The reversal of 1283868 is 8683821.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 255 + ... + 1622.

2^1283868 is an apocalyptic number.

1283868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1283868 is an abundant number, since it is smaller than the sum of its proper divisors (2134092).

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

1283868 is a wasteful number, since it uses less digits than its factorization.

1283868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 1901 counting only the distinct ones).

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

The square root of 1283868 is about 1133.0789910681. The cubic root of 1283868 is about 108.6859630923.

The spelling of 1283868 in words is "one million, two hundred eighty-three thousand, eight hundred sixty-eight".