20416835238 has 16 divisors (see below), whose sum is σ = 41038867200. Its totient is φ = 6771412296.

The previous prime is 20416835207. The next prime is 20416835251. The reversal of 20416835238 is 83253861402.

It is a super-2 number, since 2×20416835238² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20416835238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8548570 + ... + 8550957.

It is an arithmetic number, because the mean of its divisors is an integer number (2564929200).

Almost surely, 2^20416835238 is an apocalyptic number.

20416835238 is an abundant number, since it is smaller than the sum of its proper divisors (20622031962).

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

20416835238 is a wasteful number, since it uses less digits than its factorization.

20416835238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17099731.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 20416835238 in words is "twenty billion, four hundred sixteen million, eight hundred thirty-five thousand, two hundred thirty-eight".