Search a number
-
+
20803017200 = 245277429649
BaseRepresentation
bin10011010111111101…
…001101100111110000
31222200210112202202112
4103113331031213300
5320101033022300
613320132504452
71334342504630
oct232775154760
958623482675
1020803017200
1189058407a9
124046a7b128
131c66b75c44
141014bd86c0
1581b4dbe35
hex4d7f4d9f0

20803017200 has 60 divisors (see below), whose sum is σ = 57119149200. Its totient is φ = 7132462080.

The previous prime is 20803017173. The next prime is 20803017203. The reversal of 20803017200 is 271030802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803017203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3712025 + ... + 3717624.

It is an arithmetic number, because the mean of its divisors is an integer number (951985820).

Almost surely, 220803017200 is an apocalyptic number.

20803017200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20803017200 is an abundant number, since it is smaller than the sum of its proper divisors (36316132000).

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

20803017200 is a wasteful number, since it uses less digits than its factorization.

20803017200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429674 (or 7429663 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The spelling of 20803017200 in words is "twenty billion, eight hundred three million, seventeen thousand, two hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 140 175 200 280 350 400 560 700 1400 2800 7429649 14859298 29718596 37148245 52007543 59437192 74296490 104015086 118874384 148592980 185741225 208030172 260037715 297185960 371482450 416060344 520075430 594371920 742964900 832120688 1040150860 1300188575 1485929800 2080301720 2600377150 2971859600 4160603440 5200754300 10401508600 20803017200