Base | Representation |
---|---|
bin | 101001000010011100… |
… | …1000011010100010111 |
3 | 22102110212001200112200 |
4 | 1102010321003110113 |
5 | 2420441444103411 |
6 | 104252540015543 |
7 | 6236626145460 |
oct | 1220471032427 |
9 | 272425050480 |
10 | 88128894231 |
11 | 34414510694 |
12 | 150b62315b3 |
13 | 84062972c1 |
14 | 43a05d5d67 |
15 | 245be79e56 |
hex | 1484e43517 |
88128894231 has 24 divisors (see below), whose sum is σ = 147867586464. Its totient is φ = 49533802560.
The previous prime is 88128894229. The next prime is 88128894263. The reversal of 88128894231 is 13249882188.
It is not a de Polignac number, because 88128894231 - 21 = 88128894229 is a prime.
It is a super-2 number, since 2×881288942312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (88128894031) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11462316 + ... + 11470001.
It is an arithmetic number, because the mean of its divisors is an integer number (6161149436).
Almost surely, 288128894231 is an apocalyptic number.
88128894231 is a deficient number, since it is larger than the sum of its proper divisors (59738692233).
88128894231 is a wasteful number, since it uses less digits than its factorization.
88128894231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22932391 (or 22932388 counting only the distinct ones).
The product of its digits is 1769472, while the sum is 54.
The spelling of 88128894231 in words is "eighty-eight billion, one hundred twenty-eight million, eight hundred ninety-four thousand, two hundred thirty-one".
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