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20200388 = 2213479811
BaseRepresentation
bin100110100001…
…1101111000100
31102000021201112
41031003233010
520132403023
62000544152
7333462155
oct115035704
942007645
1020200388
111044793a
126922058
1342536c0
14297b92c
151b90478
hex1343bc4

20200388 has 24 divisors (see below), whose sum is σ = 38196480. Its totient is φ = 9292320.

The previous prime is 20200387. The next prime is 20200393. The reversal of 20200388 is 88300202.

It is not an unprimeable number, because it can be changed into a prime (20200387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24503 + ... + 25313.

It is an arithmetic number, because the mean of its divisors is an integer number (1591520).

Almost surely, 220200388 is an apocalyptic number.

It is an amenable number.

20200388 is a deficient number, since it is larger than the sum of its proper divisors (17996092).

20200388 is a wasteful number, since it uses less digits than its factorization.

20200388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20200388 is about 4494.4841750750. The cubic root of 20200388 is about 272.3453118636.

The spelling of 20200388 in words is "twenty million, two hundred thousand, three hundred eighty-eight".

Divisors: 1 2 4 13 26 52 479 811 958 1622 1916 3244 6227 10543 12454 21086 24908 42172 388469 776938 1553876 5050097 10100194 20200388