Search a number
-
+
20308848 = 243760443
BaseRepresentation
bin100110101111…
…0001101110000
31102012210111120
41031132031300
520144340343
62003142240
7334423320
oct115361560
942183446
1020308848
111051137a
126974980
134290b91
1429a9280
151bb2683
hex135e370

20308848 has 40 divisors (see below), whose sum is σ = 59960448. Its totient is φ = 5802432.

The previous prime is 20308843. The next prime is 20308859. The reversal of 20308848 is 84880302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20308843) 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 7 ways as a sum of consecutive naturals, for example, 29886 + ... + 30557.

Almost surely, 220308848 is an apocalyptic number.

20308848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20308848 is an abundant number, since it is smaller than the sum of its proper divisors (39651600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20308848 is a wasteful number, since it uses less digits than its factorization.

20308848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60461 (or 60455 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 20308848 is about 4506.5339230943. The cubic root of 20308848 is about 272.8318679214.

It can be divided in two parts, 2030 and 8848, that added together give a triangular number (10878 = T147).

The spelling of 20308848 in words is "twenty million, three hundred eight thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 60443 120886 181329 241772 362658 423101 483544 725316 846202 967088 1269303 1450632 1692404 2538606 2901264 3384808 5077212 6769616 10154424 20308848