2117432884 has 72 divisors (see below), whose sum is σ = 4550068320. Its totient is φ = 857304000.

The previous prime is 2117432881. The next prime is 2117432893. The reversal of 2117432884 is 4882347112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117432881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2014159 + ... + 2015209.

Almost surely, 2^2117432884 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 2117432884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275034160).

2117432884 is an abundant number, since it is smaller than the sum of its proper divisors (2432635436).

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

2117432884 is a wasteful number, since it uses less digits than its factorization.

2117432884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1620 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 2117432884 is about 46015.5721902923. The cubic root of 2117432884 is about 1284.1129265042.

Adding to 2117432884 its reverse (4882347112), we get a palindrome (6999779996).

The spelling of 2117432884 in words is "two billion, one hundred seventeen million, four hundred thirty-two thousand, eight hundred eighty-four".