Base | Representation |
---|---|
bin | 111101111000… |
… | …100101111110 |
3 | 1010112012012200 |
4 | 331320211332 |
5 | 13123110330 |
6 | 1335412330 |
7 | 254614116 |
oct | 75704576 |
9 | 33465180 |
10 | 16222590 |
11 | 91802aa |
12 | 55240a6 |
13 | 348cc87 |
14 | 2224046 |
15 | 1656a60 |
hex | f7897e |
16222590 has 96 divisors (see below), whose sum is σ = 46702656. Its totient is φ = 3886080.
The previous prime is 16222553. The next prime is 16222631. The reversal of 16222590 is 9522261.
16222590 = T1 + T2 + ... + T459.
16222590 is a nontrivial binomial coefficient, being equal to C(461, 3).
It is a congruent number.
It is an unprimeable number.
It is the 459-th tetrahedral number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34960 + ... + 35420.
It is an arithmetic number, because the mean of its divisors is an integer number (486486).
Almost surely, 216222590 is an apocalyptic number.
16222590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 16222590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23351328).
16222590 is an abundant number, since it is smaller than the sum of its proper divisors (30480066).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16222590 is a wasteful number, since it uses less digits than its factorization.
16222590 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 514 (or 511 counting only the distinct ones).
The product of its (nonzero) digits is 2160, while the sum is 27.
The square root of 16222590 is about 4027.7276471976. The cubic root of 16222590 is about 253.1473569645.
The spelling of 16222590 in words is "sixteen million, two hundred twenty-two thousand, five hundred ninety".
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