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229806719 = 1438915971
BaseRepresentation
bin11011011001010…
…01001001111111
3121000102101112222
431230221021333
5432312303334
634445315555
75460216302
oct1554511177
9530371488
10229806719
111087a120a
1264b65bbb
13387c230c
1422740b39
1515295d2e
hexdb2927f

229806719 has 4 divisors (see below), whose sum is σ = 229837080. Its totient is φ = 229776360.

The previous prime is 229806713. The next prime is 229806721. The reversal of 229806719 is 917608922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 229806719 - 212 = 229802623 is a prime.

It is a super-2 number, since 2×2298067192 = 105622256195089922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229806719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229806713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404 + ... + 22374.

It is an arithmetic number, because the mean of its divisors is an integer number (57459270).

Almost surely, 2229806719 is an apocalyptic number.

229806719 is a deficient number, since it is larger than the sum of its proper divisors (30361).

229806719 is a wasteful number, since it uses less digits than its factorization.

229806719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30360.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 229806719 is about 15159.3772629353. The cubic root of 229806719 is about 612.5208935813.

The spelling of 229806719 in words is "two hundred twenty-nine million, eight hundred six thousand, seven hundred nineteen".

Divisors: 1 14389 15971 229806719