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20794254 = 23132367173
BaseRepresentation
bin100111101010…
…0101110001110
31110010110100120
41033110232032
520310404004
62021405410
7341514435
oct117245616
943113316
1020794254
1110813038
126b69866
134400ac0
142a9411c
151c5b3d9
hex13d4b8e

20794254 has 64 divisors (see below), whose sum is σ = 47706624. Its totient is φ = 5993856.

The previous prime is 20794253. The next prime is 20794283. The reversal of 20794254 is 45249702.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20794253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120112 + ... + 120284.

It is an arithmetic number, because the mean of its divisors is an integer number (745416).

Almost surely, 220794254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20794254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23853312).

20794254 is an abundant number, since it is smaller than the sum of its proper divisors (26912370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20794254 is a wasteful number, since it uses less digits than its factorization.

20794254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20794254 is about 4560.0717099625. The cubic root of 20794254 is about 274.9884468976.

The spelling of 20794254 in words is "twenty million, seven hundred ninety-four thousand, two hundred fifty-four".

Divisors: 1 2 3 6 13 23 26 39 46 67 69 78 134 138 173 201 299 346 402 519 598 871 897 1038 1541 1742 1794 2249 2613 3082 3979 4498 4623 5226 6747 7958 9246 11591 11937 13494 20033 23182 23874 34773 40066 51727 60099 69546 103454 120198 150683 155181 266593 301366 310362 452049 533186 799779 904098 1599558 3465709 6931418 10397127 20794254