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24380305 = 525718973
BaseRepresentation
bin101110100000…
…0001110010001
31200212122111021
41131000032101
522220132210
62230315441
7414141415
oct135001621
950778437
1024380305
1112842314
1281b8b81
135088121
143348d45
152218bda
hex1740391

24380305 has 8 divisors (see below), whose sum is σ = 29371752. Its totient is φ = 19427328.

The previous prime is 24380303. The next prime is 24380311. The reversal of 24380305 is 50308342.

It can be written as a sum of positive squares in 4 ways, for example, as 7273809 + 17106496 = 2697^2 + 4136^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 24380305 - 21 = 24380303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24380305.

It is not an unprimeable number, because it can be changed into a prime (24380303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8202 + ... + 10771.

It is an arithmetic number, because the mean of its divisors is an integer number (3671469).

Almost surely, 224380305 is an apocalyptic number.

It is an amenable number.

24380305 is a deficient number, since it is larger than the sum of its proper divisors (4991447).

24380305 is a wasteful number, since it uses less digits than its factorization.

24380305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19235.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 24380305 is about 4937.6416435379. The cubic root of 24380305 is about 289.9655329627.

Adding to 24380305 its reverse (50308342), we get a palindrome (74688647).

The spelling of 24380305 in words is "twenty-four million, three hundred eighty thousand, three hundred five".

Divisors: 1 5 257 1285 18973 94865 4876061 24380305