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56702020 = 2257173547
BaseRepresentation
bin1101100001001…
…1010001000100
310221200202112211
43120103101010
5104003431040
65343153204
71255650004
oct330232104
9127622484
1056702020
112a009081
1216ba5804
13b993abb
147760004
154ea08ea
hex3613444

56702020 has 48 divisors (see below), whose sum is σ = 122629248. Its totient is φ = 22014720.

The previous prime is 56702017. The next prime is 56702039. The reversal of 56702020 is 2020765.

It is a junction number, because it is equal to n+sod(n) for n = 56701982 and 56702000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103387 + ... + 103933.

It is an arithmetic number, because the mean of its divisors is an integer number (2554776).

Almost surely, 256702020 is an apocalyptic number.

It is an amenable number.

56702020 is an abundant number, since it is smaller than the sum of its proper divisors (65927228).

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

56702020 is a wasteful number, since it uses less digits than its factorization.

56702020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 56702020 is about 7530.0743688227. The cubic root of 56702020 is about 384.1783116465.

Adding to 56702020 its reverse (2020765), we get a palindrome (58722785).

The spelling of 56702020 in words is "fifty-six million, seven hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 71 73 142 146 284 292 355 365 547 710 730 1094 1420 1460 2188 2735 5183 5470 10366 10940 20732 25915 38837 39931 51830 77674 79862 103660 155348 159724 194185 199655 388370 399310 776740 798620 2835101 5670202 11340404 14175505 28351010 56702020