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20020211000 = 235390722073
BaseRepresentation
bin10010101001010011…
…000010110100111000
31220200020120002112022
4102221103002310320
5312000133223000
613110330334012
71306055662046
oct225123026470
956606502468
1020020211000
118543983929
123a6888a308
131b709330ca
14d7cc67396
157c290e585
hex4a94c2d38

20020211000 has 64 divisors (see below), whose sum is σ = 46901069280. Its totient is φ = 7998892800.

The previous prime is 20020210993. The next prime is 20020211009. The reversal of 20020211000 is 11202002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020211009) 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, 895964 + ... + 918036.

Almost surely, 220020211000 is an apocalyptic number.

20020211000 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 20020211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23450534640).

20020211000 is an abundant number, since it is smaller than the sum of its proper divisors (26880858280).

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

20020211000 is a wasteful number, since it uses less digits than its factorization.

20020211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23001 (or 22987 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20020211000 its reverse (11202002), we get a palindrome (20031413002).

The spelling of 20020211000 in words is "twenty billion, twenty million, two hundred eleven thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 907 1000 1814 3628 4535 7256 9070 18140 22073 22675 36280 44146 45350 88292 90700 110365 113375 176584 181400 220730 226750 441460 453500 551825 882920 907000 1103650 2207300 2759125 4414600 5518250 11036500 20020211 22073000 40040422 80080844 100101055 160161688 200202110 400404220 500505275 800808440 1001010550 2002021100 2502526375 4004042200 5005052750 10010105500 20020211000