Search a number
-
+
20200321200 = 243521929137223
BaseRepresentation
bin10010110100000010…
…000111000010110000
31221010210110122021110
4102310002013002300
5312332240234300
613140242553320
71313403616503
oct226402070260
957123418243
1020200321200
118626611334
123ab9068840
131b9c0451a7
14d98b4d13a
157d363a550
hex4b40870b0

20200321200 has 480 divisors, whose sum is σ = 71295436800. Its totient is φ = 4869365760.

The previous prime is 20200321187. The next prime is 20200321223. The reversal of 20200321200 is 212300202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90584289 + ... + 90584511.

It is an arithmetic number, because the mean of its divisors is an integer number (148532160).

Almost surely, 220200321200 is an apocalyptic number.

20200321200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200321200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35647718400).

20200321200 is an abundant number, since it is smaller than the sum of its proper divisors (51095115600).

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

20200321200 is a wasteful number, since it uses less digits than its factorization.

20200321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20200321200 its reverse (212300202), we get a palindrome (20412621402).

The spelling of 20200321200 in words is "twenty billion, two hundred million, three hundred twenty-one thousand, two hundred".