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20788124 = 2273312243
BaseRepresentation
bin100111101001…
…1001110011100
31110010010221112
41033103032130
520310204444
62021321152
7341460530
oct117231634
943103845
1020788124
1110809475
126b661b8
1343cb086
142a91bc0
151c5969e
hex13d339c

20788124 has 24 divisors (see below), whose sum is σ = 41720448. Its totient is φ = 8878320.

The previous prime is 20788063. The next prime is 20788133. The reversal of 20788124 is 42188702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8147 + ... + 10389.

It is an arithmetic number, because the mean of its divisors is an integer number (1738352).

Almost surely, 220788124 is an apocalyptic number.

It is an amenable number.

20788124 is an abundant number, since it is smaller than the sum of its proper divisors (20932324).

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

20788124 is a wasteful number, since it uses less digits than its factorization.

20788124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2583 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 20788124 is about 4559.3995218669. The cubic root of 20788124 is about 274.9614226878.

The spelling of 20788124 in words is "twenty million, seven hundred eighty-eight thousand, one hundred twenty-four".

Divisors: 1 2 4 7 14 28 331 662 1324 2243 2317 4486 4634 8972 9268 15701 31402 62804 742433 1484866 2969732 5197031 10394062 20788124