Base | Representation |
---|---|
bin | 100111111101… |
… | …1110000110000 |
3 | 1110102120201000 |
4 | 1033323300300 |
5 | 20331013120 |
6 | 2025042000 |
7 | 343051563 |
oct | 117736060 |
9 | 43376630 |
10 | 20954160 |
11 | 10912197 |
12 | 7026300 |
13 | 4458816 |
14 | 2ad64da |
15 | 1c8d990 |
hex | 13fbc30 |
20954160 has 160 divisors (see below), whose sum is σ = 73656000. Its totient is φ = 5474304.
The previous prime is 20954147. The next prime is 20954177. The reversal of 20954160 is 6145902.
It is a Harshad number since it is a multiple of its sum of digits (27).
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, 192186 + ... + 192294.
It is an arithmetic number, because the mean of its divisors is an integer number (460350).
Almost surely, 220954160 is an apocalyptic number.
20954160 is a gapful number since it is divisible by the number (20) 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 20954160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36828000).
20954160 is an abundant number, since it is smaller than the sum of its proper divisors (52701840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20954160 is a wasteful number, since it uses less digits than its factorization.
20954160 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 220 (or 208 counting only the distinct ones).
The product of its (nonzero) digits is 2160, while the sum is 27.
The square root of 20954160 is about 4577.5714085091. The cubic root of 20954160 is about 275.6915268170.
The spelling of 20954160 in words is "twenty million, nine hundred fifty-four thousand, one hundred sixty".
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