8128418 has 4 divisors (see below), whose sum is σ = 12192630. Its totient is φ = 4064208.

The previous prime is 8128411. The next prime is 8128423. The reversal of 8128418 is 8148218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6017209 + 2111209 = 2453^2 + 1453^2 .

It is not an unprimeable number, because it can be changed into a prime (8128411) 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, 2032103 + ... + 2032106.

Almost surely, 2^8128418 is an apocalyptic number.

8128418 is a deficient number, since it is larger than the sum of its proper divisors (4064212).

8128418 is a wasteful number, since it uses less digits than its factorization.

8128418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064211.

The product of its digits is 4096, while the sum is 32.

The square root of 8128418 is about 2851.0380565682. The cubic root of 8128418 is about 201.0644744197.

The spelling of 8128418 in words is "eight million, one hundred twenty-eight thousand, four hundred eighteen".