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258871742 = 2129435871
BaseRepresentation
bin11110110111000…
…01000110111110
3200001010001021022
433123201012332
51012232343432
641404304142
76262242053
oct1733410676
9601101238
10258871742
11123143198
1272842052
134182a85c
142654902a
1517ad7b12
hexf6e11be

258871742 has 4 divisors (see below), whose sum is σ = 388307616. Its totient is φ = 129435870.

The previous prime is 258871729. The next prime is 258871807. The reversal of 258871742 is 247178852.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2588717422 = 134029157612229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 258871693 and 258871702.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 64717934 + ... + 64717937.

It is an arithmetic number, because the mean of its divisors is an integer number (97076904).

Almost surely, 2258871742 is an apocalyptic number.

258871742 is a deficient number, since it is larger than the sum of its proper divisors (129435874).

258871742 is a wasteful number, since it uses less digits than its factorization.

258871742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129435873.

The product of its digits is 250880, while the sum is 44.

The square root of 258871742 is about 16089.4916638159. The cubic root of 258871742 is about 637.3258718069.

The spelling of 258871742 in words is "two hundred fifty-eight million, eight hundred seventy-one thousand, seven hundred forty-two".

Divisors: 1 2 129435871 258871742