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268341481 = 1715784793
BaseRepresentation
bin11111111111010…
…01000011101001
3200200221011022101
433333221003221
51022143411411
642343253401
76435602452
oct1777510351
9620834271
10268341481
11128520a21
1275a4a261
1343794c55
14278d2129
15188588c1
hexffe90e9

268341481 has 4 divisors (see below), whose sum is σ = 284126292. Its totient is φ = 252556672.

The previous prime is 268341443. The next prime is 268341509. The reversal of 268341481 is 184143862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 252301456 + 16040025 = 15884^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 268341481 - 211 = 268339433 is a prime.

It is a super-2 number, since 2×2683414812 = 144014300850546722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268341481.

It is not an unprimeable number, because it can be changed into a prime (268341421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7892380 + ... + 7892413.

It is an arithmetic number, because the mean of its divisors is an integer number (71031573).

Almost surely, 2268341481 is an apocalyptic number.

It is an amenable number.

268341481 is a deficient number, since it is larger than the sum of its proper divisors (15784811).

268341481 is a wasteful number, since it uses less digits than its factorization.

268341481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15784810.

The product of its digits is 36864, while the sum is 37.

The square root of 268341481 is about 16381.1318595511. The cubic root of 268341481 is about 645.0042913802.

The spelling of 268341481 in words is "two hundred sixty-eight million, three hundred forty-one thousand, four hundred eighty-one".

Divisors: 1 17 15784793 268341481