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238788216 = 23331105501
BaseRepresentation
bin11100011101110…
…01111001111000
3121122022200212000
432032321321320
5442112210331
635410021000
75626444362
oct1616717170
9548280760
10238788216
11112876137
1267b77760
133a618404
14239dbd32
1515e6c0e6
hexe3b9e78

238788216 has 32 divisors (see below), whose sum is σ = 663301200. Its totient is φ = 79596000.

The previous prime is 238788191. The next prime is 238788217. The reversal of 238788216 is 612887832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238788217) 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 7 ways as a sum of consecutive naturals, for example, 552535 + ... + 552966.

Almost surely, 2238788216 is an apocalyptic number.

It is an amenable number.

238788216 is an abundant number, since it is smaller than the sum of its proper divisors (424512984).

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

238788216 is a wasteful number, since it uses less digits than its factorization.

238788216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105516 (or 1105506 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 238788216 is about 15452.7737315991. The cubic root of 238788216 is about 620.3988207498.

The spelling of 238788216 in words is "two hundred thirty-eight million, seven hundred eighty-eight thousand, two hundred sixteen".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 1105501 2211002 3316503 4422004 6633006 8844008 9949509 13266012 19899018 26532024 29848527 39798036 59697054 79596072 119394108 238788216