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258297871 = 1373272179
BaseRepresentation
bin11110110010101…
…01000000001111
3200000000220001211
433121111000033
51012111012441
641344115251
76254332006
oct1731250017
9600026054
10258297871
11122891017
1272605b27
13416895a0
1426439c3d
1517a22a81
hexf65500f

258297871 has 8 divisors (see below), whose sum is σ = 281978480. Its totient is φ = 235161792.

The previous prime is 258297863. The next prime is 258297899. The reversal of 258297871 is 178792852.

258297871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 258297871 - 23 = 258297863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258297071) 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, 135141 + ... + 137038.

It is an arithmetic number, because the mean of its divisors is an integer number (35247310).

Almost surely, 2258297871 is an apocalyptic number.

258297871 is a deficient number, since it is larger than the sum of its proper divisors (23680609).

258297871 is a wasteful number, since it uses less digits than its factorization.

258297871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272265.

The product of its digits is 564480, while the sum is 49.

The square root of 258297871 is about 16071.6480486601. The cubic root of 258297871 is about 636.8545786646.

The spelling of 258297871 in words is "two hundred fifty-eight million, two hundred ninety-seven thousand, eight hundred seventy-one".

Divisors: 1 13 73 949 272179 3538327 19869067 258297871