Search a number
-
+
20212000008 = 23313910135981
BaseRepresentation
bin10010110100101110…
…101010010100001000
31221011121102222120220
4102310232222110020
5312343233000013
613141341150040
71313605110504
oct226456522410
957147388526
1020212000008
118632168842
123b00b5b320
131ba15a3c25
14d9a50d304
157d4695b23
hex4b4baa508

20212000008 has 64 divisors (see below), whose sum is σ = 50952283200. Its totient is φ = 6681143040.

The previous prime is 20212000001. The next prime is 20212000013. The reversal of 20212000008 is 80000021202.

It is not an unprimeable number, because it can be changed into a prime (20212000001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3376378 + ... + 3382358.

It is an arithmetic number, because the mean of its divisors is an integer number (796129425).

Almost surely, 220212000008 is an apocalyptic number.

It is an amenable number.

20212000008 is an abundant number, since it is smaller than the sum of its proper divisors (30740283192).

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

20212000008 is a wasteful number, since it uses less digits than its factorization.

20212000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142 (or 7138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 20212000008 in words is "twenty billion, two hundred twelve million, eight", and thus it is an aban number.

Divisors: 1 2 3 4 6 8 12 24 139 278 417 556 834 1013 1112 1668 2026 3039 3336 4052 5981 6078 8104 11962 12156 17943 23924 24312 35886 47848 71772 140807 143544 281614 422421 563228 831359 844842 1126456 1662718 1689684 2494077 3325436 3379368 4988154 6058753 6650872 9976308 12117506 18176259 19952616 24235012 36352518 48470024 72705036 145410072 842166667 1684333334 2526500001 3368666668 5053000002 6737333336 10106000004 20212000008