20117358 has 48 divisors (see below), whose sum is σ = 47764080. Its totient is φ = 6091008.

The previous prime is 20117351. The next prime is 20117359. The reversal of 20117358 is 85371102.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117351) 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, 7741 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (995085).

Almost surely, 2^20117358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20117358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23882040).

20117358 is an abundant number, since it is smaller than the sum of its proper divisors (27646722).

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

20117358 is a wasteful number, since it uses less digits than its factorization.

20117358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 20117358 is about 4485.2377863386. The cubic root of 20117358 is about 271.9716575860.

The spelling of 20117358 in words is "twenty million, one hundred seventeen thousand, three hundred fifty-eight".