Base | Representation |
---|---|
bin | 1010110000010… |
… | …01011001011100 |
3 | 20021202110010101 |
4 | 11120021121130 |
5 | 141043403103 |
6 | 12541350444 |
7 | 2143552330 |
oct | 530113134 |
9 | 207673111 |
10 | 90216028 |
11 | 46a19701 |
12 | 26268424 |
13 | 158c9386 |
14 | bda57c0 |
15 | 7dc0a1d |
hex | 560965c |
90216028 has 96 divisors (see below), whose sum is σ = 202890240. Its totient is φ = 34214400.
The previous prime is 90216019. The next prime is 90216037. The reversal of 90216028 is 82061209.
It is a happy number.
90216028 is a nontrivial binomial coefficient, being equal to C(13433, 2).
It is an interprime number because it is at equal distance from previous prime (90216019) and next prime (90216037).
It is a Harshad number since it is a multiple of its sum of digits (28).
It is a junction number, because it is equal to n+sod(n) for n = 90215987 and 90216005.
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, 893178 + ... + 893278.
It is an arithmetic number, because the mean of its divisors is an integer number (2113440).
Almost surely, 290216028 is an apocalyptic number.
90216028 is the 13432-nd triangular number.
90216028 is the 4478-th centered nonagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 90216028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101445120).
90216028 is an abundant number, since it is smaller than the sum of its proper divisors (112674212).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
90216028 is a wasteful number, since it uses less digits than its factorization.
90216028 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 227 (or 225 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 28.
The square root of 90216028 is about 9498.2118317081. The cubic root of 90216028 is about 448.4987470070.
The spelling of 90216028 in words is "ninety million, two hundred sixteen thousand, twenty-eight".
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