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20112216 = 2335411549
BaseRepresentation
bin100110010111…
…0001101011000
31101211210202220
41030232031120
520122042331
61555024040
7332644125
oct114561530
941753686
1020112216
1110397673
12689b020
134222527
14295774c
151b74296
hex132e358

20112216 has 32 divisors (see below), whose sum is σ = 50406000. Its totient is φ = 6687360.

The previous prime is 20112199. The next prime is 20112217. The reversal of 20112216 is 61221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112195 and 20112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12210 + ... + 13758.

Almost surely, 220112216 is an apocalyptic number.

It is an amenable number.

20112216 is an abundant number, since it is smaller than the sum of its proper divisors (30293784).

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

20112216 is a wasteful number, since it uses less digits than its factorization.

20112216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 20112216 is about 4484.6645359491. The cubic root of 20112216 is about 271.9484836114.

Adding to 20112216 its reverse (61221102), we get a palindrome (81333318).

The spelling of 20112216 in words is "twenty million, one hundred twelve thousand, two hundred sixteen".

Divisors: 1 2 3 4 6 8 12 24 541 1082 1549 1623 2164 3098 3246 4328 4647 6196 6492 9294 12392 12984 18588 37176 838009 1676018 2514027 3352036 5028054 6704072 10056108 20112216