108636820 has 24 divisors (see below), whose sum is σ = 238057344. Its totient is φ = 41565216.

The previous prime is 108636793. The next prime is 108636821. The reversal of 108636820 is 28636801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108636821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117624 + ... + 118543.

It is an arithmetic number, because the mean of its divisors is an integer number (9919056).

Almost surely, 2^108636820 is an apocalyptic number.

108636820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108636820 is an abundant number, since it is smaller than the sum of its proper divisors (129420524).

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

108636820 is a wasteful number, since it uses less digits than its factorization.

108636820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236199 (or 236197 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 108636820 is about 10422.8988290206. The cubic root of 108636820 is about 477.1544899660.

The spelling of 108636820 in words is "one hundred eight million, six hundred thirty-six thousand, eight hundred twenty".