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258047049 = 3136616591
BaseRepresentation
bin11110110000101…
…11110001001001
3122222120011000010
433120113301021
51012030001144
641334502133
76252235521
oct1730276111
9588504003
10258047049
1112272a627
1272504949
13415cc380
14263b2681
15179c35b9
hexf617c49

258047049 has 8 divisors (see below), whose sum is σ = 370529152. Its totient is φ = 158798160.

The previous prime is 258047011. The next prime is 258047107. The reversal of 258047049 is 940740852.

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

It is a de Polignac number, because none of the positive numbers 2k-258047049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 6616591 = 258047049 / (2 + 5 + 8 + 0 + 4 + 7 + 0 + 4 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258046998 and 258047016.

It is not an unprimeable number, because it can be changed into a prime (258047549) 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, 3308257 + ... + 3308334.

It is an arithmetic number, because the mean of its divisors is an integer number (46316144).

Almost surely, 2258047049 is an apocalyptic number.

It is an amenable number.

258047049 is a deficient number, since it is larger than the sum of its proper divisors (112482103).

258047049 is a wasteful number, since it uses less digits than its factorization.

258047049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616607.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 258047049 is about 16063.8429088435. The cubic root of 258047049 is about 636.6483711685.

The spelling of 258047049 in words is "two hundred fifty-eight million, forty-seven thousand, forty-nine".

Divisors: 1 3 13 39 6616591 19849773 86015683 258047049