210117132 has 96 divisors (see below), whose sum is σ = 568995840. Its totient is φ = 66977280.

The previous prime is 210117109. The next prime is 210117133. The reversal of 210117132 is 231711012.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (210117133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324433 + ... + 325079.

It is an arithmetic number, because the mean of its divisors is an integer number (5927040).

Almost surely, 2^210117132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210117132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284497920).

210117132 is an abundant number, since it is smaller than the sum of its proper divisors (358878708).

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

210117132 is a wasteful number, since it uses less digits than its factorization.

210117132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 210117132 is about 14495.4176207517. The cubic root of 210117132 is about 594.5026863972.

Adding to 210117132 its reverse (231711012), we get a palindrome (441828144).

The spelling of 210117132 in words is "two hundred ten million, one hundred seventeen thousand, one hundred thirty-two".