102636 has 18 divisors (see below), whose sum is σ = 259532. Its totient is φ = 34200.

The previous prime is 102611. The next prime is 102643. The reversal of 102636 is 636201.

It is a happy number.

102636 is nontrivially palindromic in base 14.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 6.

It is an unprimeable number.

102636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1390 + ... + 1461.

2¹⁰²⁶³⁶ is an apocalyptic number.

It is an amenable number.

102636 is an abundant number, since it is smaller than the sum of its proper divisors (156896).

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

102636 is a wasteful number, since it uses less digits than its factorization.

102636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 102636 is about 320.3685377811. The cubic root of 102636 is about 46.8201972871.

Adding to 102636 its reverse (636201), we get a palindrome (738837).

The spelling of 102636 in words is "one hundred two thousand, six hundred thirty-six".