Base | Representation |
---|---|
bin | 1010110001111… |
… | …01110111110000 |
3 | 20022011100221211 |
4 | 11120331313300 |
5 | 141122242320 |
6 | 12550125504 |
7 | 2145436054 |
oct | 530756760 |
9 | 208140854 |
10 | 90430960 |
11 | 47056134 |
12 | 26350894 |
13 | 15973159 |
14 | c01dc64 |
15 | 7e1455a |
hex | 563ddf0 |
90430960 has 80 divisors (see below), whose sum is σ = 218486016. Its totient is φ = 34781184.
The previous prime is 90430957. The next prime is 90430969. The reversal of 90430960 is 6903409.
It is a tau number, because it is divible by the number of its divisors (80).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (90430969) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405409 + ... + 405631.
Almost surely, 290430960 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 90430960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109243008).
90430960 is an abundant number, since it is smaller than the sum of its proper divisors (128055056).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
90430960 is a wasteful number, since it uses less digits than its factorization.
90430960 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 410 (or 404 counting only the distinct ones).
The product of its (nonzero) digits is 5832, while the sum is 31.
The square root of 90430960 is about 9509.5194410654. The cubic root of 90430960 is about 448.8546345495.
The spelling of 90430960 in words is "ninety million, four hundred thirty thousand, nine hundred sixty".
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