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223246381 = 4719324611
BaseRepresentation
bin11010100111001…
…11100000101101
3120120002002110111
431103213200231
5424122341011
634052540021
75350364041
oct1523474055
9516062414
10223246381
11105020346
1262921611
1337336267
1421914021
15148ec121
hexd4e782d

223246381 has 8 divisors (see below), whose sum is σ = 229186944. Its totient is φ = 217355520.

The previous prime is 223246357. The next prime is 223246393. The reversal of 223246381 is 183642322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-223246381 is a prime.

It is a super-3 number, since 3×2232463813 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223246301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3235 + ... + 21376.

It is an arithmetic number, because the mean of its divisors is an integer number (28648368).

Almost surely, 2223246381 is an apocalyptic number.

It is an amenable number.

223246381 is a deficient number, since it is larger than the sum of its proper divisors (5940563).

223246381 is a wasteful number, since it uses less digits than its factorization.

223246381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24851.

The product of its digits is 13824, while the sum is 31.

The square root of 223246381 is about 14941.4316917757. The cubic root of 223246381 is about 606.6359484440.

The spelling of 223246381 in words is "two hundred twenty-three million, two hundred forty-six thousand, three hundred eighty-one".

Divisors: 1 47 193 9071 24611 1156717 4749923 223246381