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247268 = 2278831
BaseRepresentation
bin111100010111100100
3110120012002
4330113210
530403033
65144432
72046620
oct742744
9416162
10247268
1115985a
12bb118
1388718
1466180
154d3e8
hex3c5e4

247268 has 12 divisors (see below), whose sum is σ = 494592. Its totient is φ = 105960.

The previous prime is 247259. The next prime is 247279. The reversal of 247268 is 862742.

247268 is an admirable number.

It is a super-2 number, since 2×2472682 = 122282927648, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 247268.

It is an unprimeable number.

247268 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4388 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (41216).

2247268 is an apocalyptic number.

247268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

247268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247268 is a wasteful number, since it uses less digits than its factorization.

247268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8842 (or 8840 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 247268 is about 497.2604951130. The cubic root of 247268 is about 62.7657378662.

It can be divided in two parts, 247 and 268, that added together give a palindrome (515).

The spelling of 247268 in words is "two hundred forty-seven thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 8831 17662 35324 61817 123634 247268