1238678 has 16 divisors (see below), whose sum is σ = 2146560. Its totient is φ = 525096.

The previous prime is 1238659. The next prime is 1238681. The reversal of 1238678 is 8768321.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Curzon number.

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, 1013 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (134160).

2^1238678 is an apocalyptic number.

1238678 is a deficient number, since it is larger than the sum of its proper divisors (907882).

1238678 is a wasteful number, since it uses less digits than its factorization.

1238678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its digits is 16128, while the sum is 35.

The square root of 1238678 is about 1112.9591187461. The cubic root of 1238678 is about 107.3955141247.

The spelling of 1238678 in words is "one million, two hundred thirty-eight thousand, six hundred seventy-eight".