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268968747 = 31725720521
BaseRepresentation
bin10000000010000…
…010001100101011
3200202010000202110
4100002002030223
51022323444442
642404533403
76444124305
oct2002021453
9622100673
10268968747
1112890a223
12760b1263
1343954608
1427a16975
151892e69c
hex1008232b

268968747 has 16 divisors (see below), whose sum is σ = 381216672. Its totient is φ = 168099840.

The previous prime is 268968737. The next prime is 268968751. The reversal of 268968747 is 747869862.

It is not a de Polignac number, because 268968747 - 210 = 268967723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268968737) 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, 2847 + ... + 23367.

It is an arithmetic number, because the mean of its divisors is an integer number (23826042).

Almost surely, 2268968747 is an apocalyptic number.

268968747 is a deficient number, since it is larger than the sum of its proper divisors (112247925).

268968747 is a wasteful number, since it uses less digits than its factorization.

268968747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20798.

The product of its digits is 8128512, while the sum is 57.

The square root of 268968747 is about 16400.2666746611. The cubic root of 268968747 is about 645.5064803792.

The spelling of 268968747 in words is "two hundred sixty-eight million, nine hundred sixty-eight thousand, seven hundred forty-seven".

Divisors: 1 3 17 51 257 771 4369 13107 20521 61563 348857 1046571 5273897 15821691 89656249 268968747