Search a number
-
+
20112383808 = 2633112432237
BaseRepresentation
bin10010101110110010…
…101001111101000000
31220220122222221212000
4102232302221331000
5312142232240213
613123422104000
71311255304326
oct225662517500
956818887760
1020112383808
118590a09700
123a9371b000
131b86a6602a
14d8b1bbd16
157caa69c73
hex4aeca9f40

20112383808 has 336 divisors, whose sum is σ = 66531622080. Its totient is φ = 5950264320.

The previous prime is 20112383807. The next prime is 20112383821. The reversal of 20112383808 is 80838321102.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112383803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8989666 + ... + 8991902.

It is an arithmetic number, because the mean of its divisors is an integer number (198010780).

Almost surely, 220112383808 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 20112383808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33265811040).

20112383808 is an abundant number, since it is smaller than the sum of its proper divisors (46419238272).

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

20112383808 is a wasteful number, since it uses less digits than its factorization.

20112383808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 20112383808 in words is "twenty billion, one hundred twelve million, three hundred eighty-three thousand, eight hundred eight".