8138426 has 8 divisors (see below), whose sum is σ = 12467520. Its totient is φ = 3982588.

The previous prime is 8138413. The next prime is 8138443. The reversal of 8138426 is 6248318.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8138392 and 8138401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43196 + ... + 43383.

It is an arithmetic number, because the mean of its divisors is an integer number (1558440).

Almost surely, 2^8138426 is an apocalyptic number.

8138426 is a deficient number, since it is larger than the sum of its proper divisors (4329094).

8138426 is a wasteful number, since it uses less digits than its factorization.

8138426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86628.

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

The square root of 8138426 is about 2852.7926668442. The cubic root of 8138426 is about 201.1469598419.

The spelling of 8138426 in words is "eight million, one hundred thirty-eight thousand, four hundred twenty-six".