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223930560 = 2635747709
BaseRepresentation
bin11010101100011…
…10100011000000
3120121100211222110
431112032203000
5424311234220
634115335320
75356243530
oct1526164300
9517324873
10223930560
11105448387
1262bb1540
13375157b9
1421a514c0
15149d4be0
hexd58e8c0

223930560 has 224 divisors, whose sum is σ = 831006720. Its totient is φ = 50024448.

The previous prime is 223930481. The next prime is 223930571. The reversal of 223930560 is 65039322.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315486 + ... + 316194.

Almost surely, 2223930560 is an apocalyptic number.

223930560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223930560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415503360).

223930560 is an abundant number, since it is smaller than the sum of its proper divisors (607076160).

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

223930560 is a wasteful number, since it uses less digits than its factorization.

223930560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 223930560 is about 14964.3095397015. The cubic root of 223930560 is about 607.2550317171.

Adding to 223930560 its reverse (65039322), we get a palindrome (288969882).

The spelling of 223930560 in words is "two hundred twenty-three million, nine hundred thirty thousand, five hundred sixty".