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229886143 = 377187509
BaseRepresentation
bin11011011001111…
…00100010111111
3121000120102111121
431230330202333
5432322324033
634451131411
75460666664
oct1554744277
9530512447
10229886143
11108845953
1264ba3b67
133881c506
1422761a6b
15152ae62d
hexdb3c8bf

229886143 has 8 divisors (see below), whose sum is σ = 239427360. Its totient is φ = 220520160.

The previous prime is 229886119. The next prime is 229886147. The reversal of 229886143 is 341688922.

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

It is a cyclic number.

It is not a de Polignac number, because 229886143 - 29 = 229885631 is a prime.

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 229886143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229886147) 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, 41128 + ... + 46381.

It is an arithmetic number, because the mean of its divisors is an integer number (29928420).

Almost surely, 2229886143 is an apocalyptic number.

229886143 is a deficient number, since it is larger than the sum of its proper divisors (9541217).

229886143 is an equidigital number, since it uses as much as digits as its factorization.

229886143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87617.

The product of its digits is 165888, while the sum is 43.

The square root of 229886143 is about 15161.9966693045. The cubic root of 229886143 is about 612.5914503463.

The spelling of 229886143 in words is "two hundred twenty-nine million, eight hundred eighty-six thousand, one hundred forty-three".

Divisors: 1 37 71 2627 87509 3237833 6213139 229886143