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20212110 = 2325224579
BaseRepresentation
bin100110100011…
…0100110001110
31102000212210200
41031012212032
520133241420
62001114330
7333541302
oct115064616
942025720
1020212110
1110455726
1269289a6
134258b39
142981d02
151b93b90
hex134698e

20212110 has 24 divisors (see below), whose sum is σ = 52551720. Its totient is φ = 5389872.

The previous prime is 20212103. The next prime is 20212111. The reversal of 20212110 is 1121202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20212092 and 20212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212111) 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, 112200 + ... + 112379.

It is an arithmetic number, because the mean of its divisors is an integer number (2189655).

Almost surely, 220212110 is an apocalyptic number.

20212110 is an abundant number, since it is smaller than the sum of its proper divisors (32339610).

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

20212110 is a wasteful number, since it uses less digits than its factorization.

20212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224592 (or 224589 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20212110 is about 4495.7880288110. The cubic root of 20212110 is about 272.3979810572.

Adding to 20212110 its reverse (1121202), we get a palindrome (21333312).

The spelling of 20212110 in words is "twenty million, two hundred twelve thousand, one hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 224579 449158 673737 1122895 1347474 2021211 2245790 3368685 4042422 6737370 10106055 20212110