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254342005 = 51732831039
BaseRepresentation
bin11110010100011…
…11001101110101
3122201120220122021
433022033031311
51010102421010
641123233141
76205604611
oct1712171565
9581526567
10254342005
11120629a05
12712187b1
1340902b38
1425aca341
15174e08da
hexf28f375

254342005 has 16 divisors (see below), whose sum is σ = 308355840. Its totient is φ = 201388608.

The previous prime is 254342003. The next prime is 254342009. The reversal of 254342005 is 500243452.

It is not a de Polignac number, because 254342005 - 21 = 254342003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254342003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244276 + ... + 245314.

It is an arithmetic number, because the mean of its divisors is an integer number (19272240).

Almost surely, 2254342005 is an apocalyptic number.

It is an amenable number.

254342005 is a deficient number, since it is larger than the sum of its proper divisors (54013835).

254342005 is a wasteful number, since it uses less digits than its factorization.

254342005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 254342005 is about 15948.1034922652. The cubic root of 254342005 is about 633.5866679658.

Adding to 254342005 its reverse (500243452), we get a palindrome (754585457).

The spelling of 254342005 in words is "two hundred fifty-four million, three hundred forty-two thousand, five".

Divisors: 1 5 173 283 865 1039 1415 5195 48959 179747 244795 294037 898735 1470185 50868401 254342005