Base | Representation |
---|---|
bin | 11001011010101… |
… | …11110000111100 |
3 | 112212012201102022 |
4 | 30231113300330 |
5 | 414041023122 |
6 | 33054015312 |
7 | 5166225566 |
oct | 1455276074 |
9 | 485181368 |
10 | 213220412 |
11 | aa3a2719 |
12 | 5b4a7538 |
13 | 35235932 |
14 | 20464336 |
15 | 13abb642 |
hex | cb57c3c |
213220412 has 36 divisors (see below), whose sum is σ = 389525136. Its totient is φ = 102117120.
The previous prime is 213220411. The next prime is 213220421. The reversal of 213220412 is 214022312.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (213220411) 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, 810593 + ... + 810855.
Almost surely, 2213220412 is an apocalyptic number.
It is an amenable number.
213220412 is a deficient number, since it is larger than the sum of its proper divisors (176304724).
213220412 is a wasteful number, since it uses less digits than its factorization.
213220412 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 566 (or 535 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 17.
The square root of 213220412 is about 14602.0687575425. The cubic root of 213220412 is about 597.4151879759.
Adding to 213220412 its reverse (214022312), we get a palindrome (427242724).
The spelling of 213220412 in words is "two hundred thirteen million, two hundred twenty thousand, four hundred twelve".
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