Base | Representation |
---|---|
bin | 1100100001111100111… |
… | …0010010001011110000 |
3 | 202120122200121222111021 |
4 | 3020133032102023300 |
5 | 12011334140443432 |
6 | 242521130225224 |
7 | 21360434351110 |
oct | 3103716221360 |
9 | 676580558437 |
10 | 215272202992 |
11 | 83329601370 |
12 | 3587a285214 |
13 | 173b9382992 |
14 | a5c2521040 |
15 | 58ee106697 |
hex | 321f3922f0 |
215272202992 has 160 divisors (see below), whose sum is σ = 523715051520. Its totient is φ = 83276624640.
The previous prime is 215272202963. The next prime is 215272203001. The reversal of 215272202992 is 299202272512.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133958253 + ... + 133959859.
It is an arithmetic number, because the mean of its divisors is an integer number (3273219072).
Almost surely, 2215272202992 is an apocalyptic number.
215272202992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 215272202992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261857525760).
215272202992 is an abundant number, since it is smaller than the sum of its proper divisors (308442848528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215272202992 is a wasteful number, since it uses less digits than its factorization.
215272202992 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2339 (or 2333 counting only the distinct ones).
The product of its (nonzero) digits is 181440, while the sum is 43.
The spelling of 215272202992 in words is "two hundred fifteen billion, two hundred seventy-two million, two hundred two thousand, nine hundred ninety-two".
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