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234242505 = 3257799413
BaseRepresentation
bin11011111011001…
…00000111001001
3121022202202022100
431331210013021
5434431230010
635124344013
75543012520
oct1575440711
9538682270
10234242505
11110250952
1266545009
13396b6343
14231774b7
15158702c0
hexdf641c9

234242505 has 48 divisors (see below), whose sum is σ = 469946880. Its totient is φ = 105715584.

The previous prime is 234242467. The next prime is 234242509. The reversal of 234242505 is 505242432.

It is a happy number.

234242505 is a `hidden beast` number, since 234 + 2 + 425 + 0 + 5 = 666.

It is not a de Polignac number, because 234242505 - 26 = 234242441 is a prime.

It is a super-2 number, since 2×2342425052 = 109739102297350050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (234242509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20179 + ... + 29591.

It is an arithmetic number, because the mean of its divisors is an integer number (9790560).

Almost surely, 2234242505 is an apocalyptic number.

It is an amenable number.

234242505 is an abundant number, since it is smaller than the sum of its proper divisors (235704375).

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

234242505 is a wasteful number, since it uses less digits than its factorization.

234242505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510 (or 9507 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 234242505 is about 15304.9830120781. The cubic root of 234242505 is about 616.4368150761.

Adding to 234242505 its reverse (505242432), we get a palindrome (739484937).

The spelling of 234242505 in words is "two hundred thirty-four million, two hundred forty-two thousand, five hundred five".

Divisors: 1 3 5 7 9 15 21 35 45 63 79 105 237 315 395 553 711 1185 1659 2765 3555 4977 8295 9413 24885 28239 47065 65891 84717 141195 197673 329455 423585 593019 743627 988365 2230881 2965095 3718135 5205389 6692643 11154405 15616167 26026945 33463215 46848501 78080835 234242505