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20420350 = 2522914083
BaseRepresentation
bin100110111100…
…1011011111110
31102102110110021
41031321123332
520211422400
62005402354
7335366356
oct115713376
942373407
1020420350
1110588125
126a093ba
1342cc862
1429d7b66
151bd571a
hex13796fe

20420350 has 24 divisors (see below), whose sum is σ = 39294360. Its totient is φ = 7885920.

The previous prime is 20420347. The next prime is 20420357. The reversal of 20420350 is 5302402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5592 + ... + 8491.

It is an arithmetic number, because the mean of its divisors is an integer number (1637265).

Almost surely, 220420350 is an apocalyptic number.

20420350 is a deficient number, since it is larger than the sum of its proper divisors (18874010).

20420350 is a wasteful number, since it uses less digits than its factorization.

20420350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14124 (or 14119 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20420350 is about 4518.8881375843. Note that the first 3 decimals coincide. The cubic root of 20420350 is about 273.3302679939.

Adding to 20420350 its reverse (5302402), we get a palindrome (25722752).

The spelling of 20420350 in words is "twenty million, four hundred twenty thousand, three hundred fifty".

Divisors: 1 2 5 10 25 29 50 58 145 290 725 1450 14083 28166 70415 140830 352075 408407 704150 816814 2042035 4084070 10210175 20420350