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250668311 = 1913193069
BaseRepresentation
bin11101111000011…
…10010100010111
3122110200021021112
432330032110113
51003132341221
640512405235
76132434255
oct1674162427
9573607245
10250668311
1111954a8a3
126bb4681b
133cc1795a
14254115d5
151701715b
hexef0e517

250668311 has 4 divisors (see below), whose sum is σ = 263861400. Its totient is φ = 237475224.

The previous prime is 250668293. The next prime is 250668317. The reversal of 250668311 is 113866052.

It is a happy number.

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

It is not a de Polignac number, because 250668311 - 226 = 183559447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250668317) 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, 6596516 + ... + 6596553.

It is an arithmetic number, because the mean of its divisors is an integer number (65965350).

Almost surely, 2250668311 is an apocalyptic number.

250668311 is a deficient number, since it is larger than the sum of its proper divisors (13193089).

250668311 is a wasteful number, since it uses less digits than its factorization.

250668311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193088.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 250668311 is about 15832.5080451582. The cubic root of 250668311 is about 630.5213715485.

The spelling of 250668311 in words is "two hundred fifty million, six hundred sixty-eight thousand, three hundred eleven".

Divisors: 1 19 13193069 250668311