28838156 has 6 divisors (see below), whose sum is σ = 50466780. Its totient is φ = 14419076.

The previous prime is 28838099. The next prime is 28838167. The reversal of 28838156 is 65183882.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3604766 + ... + 3604773.

It is an arithmetic number, because the mean of its divisors is an integer number (8411130).

Almost surely, 2^28838156 is an apocalyptic number.

It is an amenable number.

28838156 is a deficient number, since it is larger than the sum of its proper divisors (21628624).

28838156 is a wasteful number, since it uses less digits than its factorization.

28838156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209543 (or 7209541 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 28838156 is about 5370.1169447229. The cubic root of 28838156 is about 306.6590803626.

The spelling of 28838156 in words is "twenty-eight million, eight hundred thirty-eight thousand, one hundred fifty-six".