28838158 has 4 divisors (see below), whose sum is σ = 43257240. Its totient is φ = 14419078.

The previous prime is 28838099. The next prime is 28838167. The reversal of 28838158 is 85183882.

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, 7209538 + ... + 7209541.

It is an arithmetic number, because the mean of its divisors is an integer number (10814310).

Almost surely, 2^28838158 is an apocalyptic number.

28838158 is a deficient number, since it is larger than the sum of its proper divisors (14419082).

28838158 is a wasteful number, since it uses less digits than its factorization.

28838158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419081.

The product of its digits is 122880, while the sum is 43.

The square root of 28838158 is about 5370.1171309386. The cubic root of 28838158 is about 306.6590874518.

The spelling of 28838158 in words is "twenty-eight million, eight hundred thirty-eight thousand, one hundred fifty-eight".