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268020697 = 7294912689
BaseRepresentation
bin11111111100110…
…10101111011001
3200200022212021111
433332122233121
51022103130242
642332340321
76433065310
oct1776325731
9620285244
10268020697
11128321a0a
12759146a1
13436b1c39
142784b277
15187e3817
hexff9abd9

268020697 has 16 divisors (see below), whose sum is σ = 317635200. Its totient is φ = 221276160.

The previous prime is 268020671. The next prime is 268020757. The reversal of 268020697 is 796020862.

It is not a de Polignac number, because 268020697 - 219 = 267496409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268020617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98329 + ... + 101017.

It is an arithmetic number, because the mean of its divisors is an integer number (19852200).

Almost surely, 2268020697 is an apocalyptic number.

It is an amenable number.

268020697 is a deficient number, since it is larger than the sum of its proper divisors (49614503).

268020697 is a wasteful number, since it uses less digits than its factorization.

268020697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 268020697 is about 16371.3376667883. The cubic root of 268020697 is about 644.7471693003.

The spelling of 268020697 in words is "two hundred sixty-eight million, twenty thousand, six hundred ninety-seven".

Divisors: 1 7 29 203 491 2689 3437 14239 18823 77981 99673 545867 1320299 9242093 38288671 268020697