100798 has 8 divisors (see below), whose sum is σ = 153000. Its totient is φ = 49800.

The previous prime is 100787. The next prime is 100799. The reversal of 100798 is 897001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48 + ... + 451.

It is an arithmetic number, because the mean of its divisors is an integer number (19125).

2¹⁰⁰⁷⁹⁸ is an apocalyptic number.

100798 is a deficient number, since it is larger than the sum of its proper divisors (52202).

100798 is a wasteful number, since it uses less digits than its factorization.

100798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 100798 is about 317.4870076082. The cubic root of 100798 is about 46.5390276271.

Adding to 100798 its reverse (897001), we get a palindrome (997799).

It can be divided in two parts, 100 and 798, that multiplied together give a triangular number (79800 = T₃₉₉).

The spelling of 100798 in words is "one hundred thousand, seven hundred ninety-eight".