117212436 has 72 divisors (see below), whose sum is σ = 324533664. Its totient is φ = 35375040.

The previous prime is 117212383. The next prime is 117212437. The reversal of 117212436 is 634212711.

117212436 is a `hidden beast` number, since 1 + 17 + 212 + 436 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117212437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136986 + ... + 137838.

It is an arithmetic number, because the mean of its divisors is an integer number (4507412).

Almost surely, 2^117212436 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 117212436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162266832).

117212436 is an abundant number, since it is smaller than the sum of its proper divisors (207321228).

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

117212436 is a wasteful number, since it uses less digits than its factorization.

117212436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1216 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 117212436 is about 10826.4692305479. The cubic root of 117212436 is about 489.3931624230.

The spelling of 117212436 in words is "one hundred seventeen million, two hundred twelve thousand, four hundred thirty-six".