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229206438 = 23212733691
BaseRepresentation
bin11011010100101…
…10100110100110
3120222021220010100
431222112212212
5432134101223
634424404530
75452136226
oct1552264646
9528256110
10229206438
1110842120a
1264916746
1338642016
1422626086
15151c8043
hexda969a6

229206438 has 12 divisors (see below), whose sum is σ = 496613988. Its totient is φ = 76402140.

The previous prime is 229206437. The next prime is 229206449. The reversal of 229206438 is 834602922.

229206438 is a `hidden beast` number, since 2 + 2 + 9 + 2 + 0 + 643 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229206437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6366828 + ... + 6366863.

It is an arithmetic number, because the mean of its divisors is an integer number (41384499).

Almost surely, 2229206438 is an apocalyptic number.

229206438 is an abundant number, since it is smaller than the sum of its proper divisors (267407550).

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

229206438 is a wasteful number, since it uses less digits than its factorization.

229206438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12733699 (or 12733696 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 229206438 is about 15139.5653174059. The cubic root of 229206438 is about 611.9871040471.

The spelling of 229206438 in words is "two hundred twenty-nine million, two hundred six thousand, four hundred thirty-eight".

Divisors: 1 2 3 6 9 18 12733691 25467382 38201073 76402146 114603219 229206438