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20296605 = 357193301
BaseRepresentation
bin100110101101…
…1001110011101
31102012011201010
41031123032131
520143442410
62003005433
7334342530
oct115331635
942164633
1020296605
111050315a
126969879
134288434
1429a4a17
151badc20
hex135b39d

20296605 has 16 divisors (see below), whose sum is σ = 37113984. Its totient is φ = 9278400.

The previous prime is 20296583. The next prime is 20296637. The reversal of 20296605 is 50669202.

20296605 = T771 + T772 + ... + T833.

It is not a de Polignac number, because 20296605 - 210 = 20295581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96546 + ... + 96755.

It is an arithmetic number, because the mean of its divisors is an integer number (2319624).

Almost surely, 220296605 is an apocalyptic number.

It is an amenable number.

20296605 is a deficient number, since it is larger than the sum of its proper divisors (16817379).

20296605 is a wasteful number, since it uses less digits than its factorization.

20296605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193316.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20296605 is about 4505.1753572974. The cubic root of 20296605 is about 272.7770321834. Note that the first 3 decimals are identical.

The spelling of 20296605 in words is "twenty million, two hundred ninety-six thousand, six hundred five".

Divisors: 1 3 5 7 15 21 35 105 193301 579903 966505 1353107 2899515 4059321 6765535 20296605