8128438 has 8 divisors (see below), whose sum is σ = 12245688. Its totient is φ = 4046544.

The previous prime is 8128423. The next prime is 8128441. The reversal of 8128438 is 8348218.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8256 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (1530711).

Almost surely, 2^8128438 is an apocalyptic number.

8128438 is a deficient number, since it is larger than the sum of its proper divisors (4117250).

8128438 is a wasteful number, since it uses less digits than its factorization.

8128438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17678.

The product of its digits is 12288, while the sum is 34.

The square root of 8128438 is about 2851.0415640604. The cubic root of 8128438 is about 201.0646393262.

The spelling of 8128438 in words is "eight million, one hundred twenty-eight thousand, four hundred thirty-eight".