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24189245 = 56179309
BaseRepresentation
bin101110001000…
…1100100111101
31200111221101222
41130101210331
522143023440
62222243125
7412414403
oct134214475
950457358
1024189245
1112721813
1281264a5
13501c182
1432d9473
1521cc2b5
hex171193d

24189245 has 8 divisors (see below), whose sum is σ = 29503320. Its totient is φ = 19033920.

The previous prime is 24189229. The next prime is 24189257. The reversal of 24189245 is 54298142.

It can be written as a sum of positive squares in 4 ways, for example, as 1503076 + 22686169 = 1226^2 + 4763^2 .

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

It is not a de Polignac number, because 24189245 - 24 = 24189229 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 39350 + ... + 39959.

It is an arithmetic number, because the mean of its divisors is an integer number (3687915).

Almost surely, 224189245 is an apocalyptic number.

It is an amenable number.

24189245 is a deficient number, since it is larger than the sum of its proper divisors (5314075).

24189245 is an equidigital number, since it uses as much as digits as its factorization.

24189245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79375.

The product of its digits is 23040, while the sum is 35.

The square root of 24189245 is about 4918.2562966970. The cubic root of 24189245 is about 289.2060925443.

The spelling of 24189245 in words is "twenty-four million, one hundred eighty-nine thousand, two hundred forty-five".

Divisors: 1 5 61 305 79309 396545 4837849 24189245