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223424868 = 22318618739
BaseRepresentation
bin11010101000100…
…11000101100100
3120120102011022010
431110103011210
5424144043433
634100434220
75352036312
oct1524230544
9516364263
10223424868
11105132457
12629a8970
1337399584
142195d0b2
1514934e63
hexd513164

223424868 has 12 divisors (see below), whose sum is σ = 521324720. Its totient is φ = 74474952.

The previous prime is 223424837. The next prime is 223424879. The reversal of 223424868 is 868424322.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9309358 + ... + 9309381.

Almost surely, 2223424868 is an apocalyptic number.

It is an amenable number.

223424868 is an abundant number, since it is smaller than the sum of its proper divisors (297899852).

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

223424868 is a wasteful number, since it uses less digits than its factorization.

223424868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18618746 (or 18618744 counting only the distinct ones).

The product of its digits is 147456, while the sum is 39.

The square root of 223424868 is about 14947.4033865418. The cubic root of 223424868 is about 606.7975752333.

The spelling of 223424868 in words is "two hundred twenty-three million, four hundred twenty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 18618739 37237478 55856217 74474956 111712434 223424868