102798 has 12 divisors (see below), whose sum is σ = 222768. Its totient is φ = 34260.

The previous prime is 102797. The next prime is 102811. The reversal of 102798 is 897201.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102798.

It is not an unprimeable number, because it can be changed into a prime (102793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2838 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (18564).

2¹⁰²⁷⁹⁸ is an apocalyptic number.

102798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102798 is an abundant number, since it is smaller than the sum of its proper divisors (119970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102798 is a wasteful number, since it uses less digits than its factorization.

102798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719 (or 5716 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 102798 is about 320.6212719082. The cubic root of 102798 is about 46.8448179037.

Adding to 102798 its reverse (897201), we get a palindrome (999999).

It can be divided in two parts, 102 and 798, that added together give a square (900 = 30²).

The spelling of 102798 in words is "one hundred two thousand, seven hundred ninety-eight".