Base | Representation |
---|---|
bin | 1001100100111… |
… | …00010001110000 |
3 | 12121011021122010 |
4 | 10302130101300 |
5 | 131031110023 |
6 | 11545442520 |
7 | 1663544520 |
oct | 462342160 |
9 | 177137563 |
10 | 80331888 |
11 | 4138859a |
12 | 22aa0440 |
13 | 13848480 |
14 | a951680 |
15 | 70bc093 |
hex | 4c9c470 |
80331888 has 160 divisors (see below), whose sum is σ = 260983296. Its totient is φ = 20726784.
The previous prime is 80331887. The next prime is 80331949. The reversal of 80331888 is 88813308.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80331887) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231331 + ... + 231677.
Almost surely, 280331888 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80331888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130491648).
80331888 is an abundant number, since it is smaller than the sum of its proper divisors (180651408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80331888 is a wasteful number, since it uses less digits than its factorization.
80331888 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 431 (or 425 counting only the distinct ones).
The product of its (nonzero) digits is 36864, while the sum is 39.
The square root of 80331888 is about 8962.8058106823. The cubic root of 80331888 is about 431.4819750901.
The spelling of 80331888 in words is "eighty million, three hundred thirty-one thousand, eight hundred eighty-eight".
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