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268345351 = 18128191
BaseRepresentation
bin11111111111010…
…10000000000111
3200200221100121201
433333222000013
51022144022401
642343323331
76435616651
oct1777520007
9620840551
10268345351
1112852391a
1275a50547
1343796941
14278d36d1
1518859b01
hexffea007

268345351 has 6 divisors (see below), whose sum is σ = 269869056. Its totient is φ = 266830200.

The previous prime is 268345339. The next prime is 268345367. The reversal of 268345351 is 153543862.

It is not a de Polignac number, because 268345351 - 27 = 268345223 is a prime.

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 268345351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268340351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28666 + ... + 36856.

It is an arithmetic number, because the mean of its divisors is an integer number (44978176).

Almost surely, 2268345351 is an apocalyptic number.

268345351 is the 8191-st decagonal number.

268345351 is a deficient number, since it is larger than the sum of its proper divisors (1523705).

268345351 is an frugal number, since it uses more digits than its factorization.

268345351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8372 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 268345351 is about 16381.2499828310. The cubic root of 268345351 is about 645.0073920992.

The spelling of 268345351 in words is "two hundred sixty-eight million, three hundred forty-five thousand, three hundred fifty-one".

Divisors: 1 181 8191 32761 1482571 268345351