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268130247 = 37111517687
BaseRepresentation
bin11111111101101…
…01011111000111
3200200112102112220
433332311133013
51022120131442
642334543423
76434032560
oct1776653707
9620472486
10268130247
11128397250
1275967b73
134371ca68
1427879167
1518815eec
hexffb57c7

268130247 has 32 divisors (see below), whose sum is σ = 448733184. Its totient is φ = 138348000.

The previous prime is 268130237. The next prime is 268130267. The reversal of 268130247 is 742031862.

It is not a de Polignac number, because 268130247 - 28 = 268129991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268130207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31038 + ... + 38724.

It is an arithmetic number, because the mean of its divisors is an integer number (14022912).

Almost surely, 2268130247 is an apocalyptic number.

268130247 is a deficient number, since it is larger than the sum of its proper divisors (180602937).

268130247 is a wasteful number, since it uses less digits than its factorization.

268130247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 268130247 is about 16374.6831114376. The cubic root of 268130247 is about 644.8350013621.

The spelling of 268130247 in words is "two hundred sixty-eight million, one hundred thirty thousand, two hundred forty-seven".

Divisors: 1 3 7 11 21 33 77 151 231 453 1057 1661 3171 4983 7687 11627 23061 34881 53809 84557 161427 253671 591899 1160737 1775697 3482211 8125159 12768107 24375477 38304321 89376749 268130247