1238684 has 6 divisors (see below), whose sum is σ = 2167704. Its totient is φ = 619340.

The previous prime is 1238683. The next prime is 1238687. The reversal of 1238684 is 4868321.

It is a d-powerful number, because it can be written as 1 + 2²⁰ + 3¹¹ + 8² + 6⁵ + 8⁴ + 4⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 1238684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238681) by changing a digit.

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 as a sum of consecutive naturals, namely, 154832 + ... + 154839.

It is an arithmetic number, because the mean of its divisors is an integer number (361284).

2^1238684 is an apocalyptic number.

It is an amenable number.

1238684 is a deficient number, since it is larger than the sum of its proper divisors (929020).

1238684 is a wasteful number, since it uses less digits than its factorization.

1238684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309675 (or 309673 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1238684 is about 1112.9618142596. The cubic root of 1238684 is about 107.3956875279.

The spelling of 1238684 in words is "one million, two hundred thirty-eight thousand, six hundred eighty-four".