Base | Representation |
---|---|
bin | 1000100110110… |
… | …11000000010100 |
3 | 12000212011001221 |
4 | 10103123000110 |
5 | 121440401322 |
6 | 11055300124 |
7 | 1534456150 |
oct | 423330024 |
9 | 160764057 |
10 | 72200212 |
11 | 378340a7 |
12 | 2021a644 |
13 | 11c5c126 |
14 | 9836060 |
15 | 65129c7 |
hex | 44db014 |
72200212 has 24 divisors (see below), whose sum is σ = 146382656. Its totient is φ = 30518208.
The previous prime is 72200201. The next prime is 72200213. The reversal of 72200212 is 21200227.
It is a super-2 number, since 2×722002122 = 10425741225689888, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72200213) 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, 15618 + ... + 19705.
Almost surely, 272200212 is an apocalyptic number.
It is an amenable number.
72200212 is an abundant number, since it is smaller than the sum of its proper divisors (74182444).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72200212 is a wasteful number, since it uses less digits than its factorization.
72200212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35407 (or 35405 counting only the distinct ones).
The product of its (nonzero) digits is 112, while the sum is 16.
The square root of 72200212 is about 8497.0707893956. The cubic root of 72200212 is about 416.4020167584.
Adding to 72200212 its reverse (21200227), we get a palindrome (93400439).
The spelling of 72200212 in words is "seventy-two million, two hundred thousand, two hundred twelve".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.078 sec. • engine limits •