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20075265 = 3257101631
BaseRepresentation
bin100110010010…
…1001100000001
31101202221002100
41030211030001
520114402030
61554141013
7332431320
oct114451401
941687070
1020075265
1110371931
126881769
13420b772
1429480b7
151b68360
hex1325301

20075265 has 48 divisors (see below), whose sum is σ = 40225536. Its totient is φ = 9072000.

The previous prime is 20075261. The next prime is 20075303. The reversal of 20075265 is 56257002.

It is not a de Polignac number, because 20075265 - 22 = 20075261 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20075261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31500 + ... + 32130.

It is an arithmetic number, because the mean of its divisors is an integer number (838032).

Almost surely, 220075265 is an apocalyptic number.

It is an amenable number.

20075265 is an abundant number, since it is smaller than the sum of its proper divisors (20150271).

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

20075265 is a wasteful number, since it uses less digits than its factorization.

20075265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20075265 is about 4480.5429358505. The cubic root of 20075265 is about 271.7818364899.

The spelling of 20075265 in words is "twenty million, seventy-five thousand, two hundred sixty-five".

Divisors: 1 3 5 7 9 15 21 35 45 63 101 105 303 315 505 631 707 909 1515 1893 2121 3155 3535 4417 4545 5679 6363 9465 10605 13251 22085 28395 31815 39753 63731 66255 191193 198765 318655 446117 573579 955965 1338351 2230585 2867895 4015053 6691755 20075265