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20025141 = 361731499
BaseRepresentation
bin100110001100…
…0111100110101
31101200101022220
41030120330311
520111301031
61553112553
7332132223
oct114307465
941611286
1020025141
1110338204
126858759
1341c19c6
142933b13
151b58596
hex1318f35

20025141 has 16 divisors (see below), whose sum is σ = 27528000. Its totient is φ = 12942720.

The previous prime is 20025139. The next prime is 20025151. The reversal of 20025141 is 14152002.

It is not a de Polignac number, because 20025141 - 21 = 20025139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20025141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12610 + ... + 14108.

It is an arithmetic number, because the mean of its divisors is an integer number (1720500).

Almost surely, 220025141 is an apocalyptic number.

It is an amenable number.

20025141 is a deficient number, since it is larger than the sum of its proper divisors (7502859).

20025141 is a wasteful number, since it uses less digits than its factorization.

20025141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20025141 is about 4474.9459214610. The cubic root of 20025141 is about 271.5554526565. Note that the first 3 decimals are identical.

Adding to 20025141 its reverse (14152002), we get a palindrome (34177143).

The spelling of 20025141 in words is "twenty million, twenty-five thousand, one hundred forty-one".

Divisors: 1 3 61 73 183 219 1499 4453 4497 13359 91439 109427 274317 328281 6675047 20025141