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20414501 = 1723109479
BaseRepresentation
bin100110111100…
…0000000100101
31102102011102122
41031320000211
520211231001
62005315325
7335343332
oct115700045
942364378
1020414501
1110583798
126a05b45
1342c9cb3
1429d5989
151bd3b1b
hex1378025

20414501 has 16 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 18171648.

The previous prime is 20414473. The next prime is 20414503. The reversal of 20414501 is 10541402.

It is a cyclic number.

It is not a de Polignac number, because 20414501 - 26 = 20414437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20414501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20414503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42380 + ... + 42858.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 220414501 is an apocalyptic number.

It is an amenable number.

20414501 is a deficient number, since it is larger than the sum of its proper divisors (2395099).

20414501 is a wasteful number, since it uses less digits than its factorization.

20414501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20414501 is about 4518.2409187647. The cubic root of 20414501 is about 273.3041688428.

Adding to 20414501 its reverse (10541402), we get a palindrome (30955903).

The spelling of 20414501 in words is "twenty million, four hundred fourteen thousand, five hundred one".

Divisors: 1 17 23 109 391 479 1853 2507 8143 11017 42619 52211 187289 887587 1200853 20414501