8557238 has 4 divisors (see below), whose sum is σ = 12835860. Its totient is φ = 4278618.

The previous prime is 8557229. The next prime is 8557253. The reversal of 8557238 is 8327558.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139308 + ... + 2139311.

It is an arithmetic number, because the mean of its divisors is an integer number (3208965).

Almost surely, 2^8557238 is an apocalyptic number.

8557238 is a deficient number, since it is larger than the sum of its proper divisors (4278622).

8557238 is a wasteful number, since it uses less digits than its factorization.

8557238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278621.

The product of its digits is 67200, while the sum is 38.

The square root of 8557238 is about 2925.2757135012. The cubic root of 8557238 is about 204.5398204389.

The spelling of 8557238 in words is "eight million, five hundred fifty-seven thousand, two hundred thirty-eight".