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200224381 = 7293131817
BaseRepresentation
bin10111110111100…
…10111001111101
3111221202110012211
423323302321331
5402224140011
631511300421
74650610360
oct1373627175
9457673184
10200224381
11a30265a5
125707a711
1332635486
141c8400d7
15128a0b21
hexbef2e7d

200224381 has 16 divisors (see below), whose sum is σ = 244362240. Its totient is φ = 160352640.

The previous prime is 200224379. The next prime is 200224391. The reversal of 200224381 is 183422002.

It is not a de Polignac number, because 200224381 - 21 = 200224379 is a prime.

It is a super-2 number, since 2×2002243812 = 80179605493666322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200224391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9616 + ... + 22201.

It is an arithmetic number, because the mean of its divisors is an integer number (15272640).

Almost surely, 2200224381 is an apocalyptic number.

It is an amenable number.

200224381 is a deficient number, since it is larger than the sum of its proper divisors (44137859).

200224381 is a wasteful number, since it uses less digits than its factorization.

200224381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31884.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 200224381 is about 14150.0664662750. The cubic root of 200224381 is about 585.0221639154.

Adding to 200224381 its reverse (183422002), we get a palindrome (383646383).

The spelling of 200224381 in words is "two hundred million, two hundred twenty-four thousand, three hundred eighty-one".

Divisors: 1 7 29 31 203 217 899 6293 31817 222719 922693 986327 6458851 6904289 28603483 200224381