| Base | Representation |
|---|---|
| bin | 1010100100101… |
| … | …01000101100000 |
| 3 | 20011212222020100 |
| 4 | 11102111011200 |
| 5 | 140201103130 |
| 6 | 12444542400 |
| 7 | 2124601314 |
| oct | 522250540 |
| 9 | 204788210 |
| 10 | 88691040 |
| 11 | 46077989 |
| 12 | 25851a00 |
| 13 | 154b4209 |
| 14 | bac9b44 |
| 15 | 7bbdc60 |
| hex | 5495160 |
88691040 has 144 divisors (see below), whose sum is σ = 320550048. Its totient is φ = 22253568.
The previous prime is 88691033. The next prime is 88691047. The reversal of 88691040 is 4019688.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (88691033) and next prime (88691047).
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×886910402 = 15732201152563200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 88690986 and 88691004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (88691047) 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, 22669 + ... + 26291.
It is an arithmetic number, because the mean of its divisors is an integer number (2226042).
Almost surely, 288691040 is an apocalyptic number.
88691040 is a gapful number since it is divisible by the number (80) 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 88691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160275024).
88691040 is an abundant number, since it is smaller than the sum of its proper divisors (231859008).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
88691040 is a wasteful number, since it uses less digits than its factorization.
88691040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3661 (or 3650 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 36.
The square root of 88691040 is about 9417.5920489263. The cubic root of 88691040 is about 445.9572710042.
The spelling of 88691040 in words is "eighty-eight million, six hundred ninety-one thousand, forty".
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