102838 has 4 divisors (see below), whose sum is σ = 154260. Its totient is φ = 51418.

The previous prime is 102829. The next prime is 102841. The reversal of 102838 is 838201.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 25708 + ... + 25711.

It is an arithmetic number, because the mean of its divisors is an integer number (38565).

2¹⁰²⁸³⁸ is an apocalyptic number.

102838 is a deficient number, since it is larger than the sum of its proper divisors (51422).

102838 is an equidigital number, since it uses as much as digits as its factorization.

102838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51421.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 102838 is about 320.6836447342. The cubic root of 102838 is about 46.8508930859.

The spelling of 102838 in words is "one hundred two thousand, eight hundred thirty-eight".