Search a number
-
+
20273741 = 1719232729
BaseRepresentation
bin100110101010…
…1101001001101
31102011000100022
41031111221031
520142224431
62002311525
7334216055
oct115255115
942130308
1020273741
1110497a64
1269585a5
13427abc7
14299a565
151ba707b
hex1355a4d

20273741 has 16 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 17284608.

The previous prime is 20273717. The next prime is 20273761. The reversal of 20273741 is 14737202.

It is a cyclic number.

It is not a de Polignac number, because 20273741 - 214 = 20257357 is a prime.

It is a super-2 number, since 2×202737412 = 822049148270162, which contains 22 as substring.

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 20273741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273711) 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, 6065 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 220273741 is an apocalyptic number.

It is an amenable number.

20273741 is a deficient number, since it is larger than the sum of its proper divisors (3313459).

20273741 is a wasteful number, since it uses less digits than its factorization.

20273741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20273741 is about 4502.6371161798. The cubic root of 20273741 is about 272.6745664849.

The spelling of 20273741 in words is "twenty million, two hundred seventy-three thousand, seven hundred forty-one".

Divisors: 1 17 19 23 323 391 437 2729 7429 46393 51851 62767 881467 1067039 1192573 20273741