Search a number
-
+
20192844 = 2237421571
BaseRepresentation
bin100110100000…
…1111001001100
31101222220101010
41031001321030
520132132334
62000445220
7333431160
oct115017114
941886333
1020192844
1110442201
126919810
134250139
142978ca0
151b8d0e9
hex1341e4c

20192844 has 48 divisors (see below), whose sum is σ = 54070016. Its totient is φ = 5745600.

The previous prime is 20192831. The next prime is 20192849. The reversal of 20192844 is 44829102.

It is not an unprimeable number, because it can be changed into a prime (20192849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35079 + ... + 35649.

Almost surely, 220192844 is an apocalyptic number.

It is an amenable number.

20192844 is an abundant number, since it is smaller than the sum of its proper divisors (33877172).

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

20192844 is a wasteful number, since it uses less digits than its factorization.

20192844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20192844 is about 4493.6448457794. The cubic root of 20192844 is about 272.3114044481.

The spelling of 20192844 in words is "twenty million, one hundred ninety-two thousand, eight hundred forty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 421 571 842 1142 1263 1684 1713 2284 2526 2947 3426 3997 5052 5894 6852 7994 8841 11788 11991 15988 17682 23982 35364 47964 240391 480782 721173 961564 1442346 1682737 2884692 3365474 5048211 6730948 10096422 20192844