Search a number
-
+
20632154 = 247219491
BaseRepresentation
bin100111010110…
…1001001011010
31102211012222212
41032231021122
520240212104
62014115122
7340241024
oct116551132
942735885
1020632154
1110712274
126aabaa2
13437509a
142a51014
151c2836e
hex13ad25a

20632154 has 8 divisors (see below), whose sum is σ = 31606848. Its totient is φ = 10096540.

The previous prime is 20632147. The next prime is 20632159. The reversal of 20632154 is 45123602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20632159) 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 3 ways as a sum of consecutive naturals, for example, 109652 + ... + 109839.

It is an arithmetic number, because the mean of its divisors is an integer number (3950856).

Almost surely, 220632154 is an apocalyptic number.

20632154 is a deficient number, since it is larger than the sum of its proper divisors (10974694).

20632154 is a wasteful number, since it uses less digits than its factorization.

20632154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219540.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20632154 is about 4542.2630923362. The cubic root of 20632154 is about 274.2720316784.

Adding to 20632154 its reverse (45123602), we get a palindrome (65755756).

The spelling of 20632154 in words is "twenty million, six hundred thirty-two thousand, one hundred fifty-four".

Divisors: 1 2 47 94 219491 438982 10316077 20632154