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20021112 = 2332278071
BaseRepresentation
bin100110001011…
…1111101111000
31101200011210200
41030113331320
520111133422
61553042200
7332114406
oct114277570
941604720
1020021112
1110335181
126856360
1341bcc17
142932476
151b572ac
hex1317f78

20021112 has 24 divisors (see below), whose sum is σ = 54224040. Its totient is φ = 6673680.

The previous prime is 20021093. The next prime is 20021137. The reversal of 20021112 is 21112002.

It is a tau number, because it is divible by the number of its divisors (24).

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 = 20021094 and 20021103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138964 + ... + 139107.

It is an arithmetic number, because the mean of its divisors is an integer number (2259335).

Almost surely, 220021112 is an apocalyptic number.

It is an amenable number.

20021112 is an abundant number, since it is smaller than the sum of its proper divisors (34202928).

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

20021112 is a wasteful number, since it uses less digits than its factorization.

20021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278083 (or 278076 counting only the distinct ones).

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

The square root of 20021112 is about 4474.4957257774. The cubic root of 20021112 is about 271.5372393798.

Adding to 20021112 its reverse (21112002), we get a palindrome (41133114).

It can be divided in two parts, 200 and 21112, that added together give a palindrome (21312).

The spelling of 20021112 in words is "twenty million, twenty-one thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 278071 556142 834213 1112284 1668426 2224568 2502639 3336852 5005278 6673704 10010556 20021112