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238868973 = 337325793
BaseRepresentation
bin11100011110011…
…01100111101101
3121122110210122000
432033031213231
5442122301343
635411442513
75630232000
oct1617154755
9548423560
10238868973
11112920882
1267bb6439
133a6460b5
1423a1d537
1515e85ed3
hexe3cd9ed

238868973 has 32 divisors (see below), whose sum is σ = 412704000. Its totient is φ = 136491264.

The previous prime is 238868963. The next prime is 238868977. The reversal of 238868973 is 379868832.

It is not a de Polignac number, because 238868973 - 24 = 238868957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238868977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3636 + ... + 22157.

It is an arithmetic number, because the mean of its divisors is an integer number (12897000).

Almost surely, 2238868973 is an apocalyptic number.

It is an amenable number.

238868973 is a deficient number, since it is larger than the sum of its proper divisors (173835027).

238868973 is an equidigital number, since it uses as much as digits as its factorization.

238868973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25823 (or 25803 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 238868973 is about 15455.3865367386. The cubic root of 238868973 is about 620.4687514768.

The spelling of 238868973 in words is "two hundred thirty-eight million, eight hundred sixty-eight thousand, nine hundred seventy-three".

Divisors: 1 3 7 9 21 27 49 63 147 189 343 441 1029 1323 3087 9261 25793 77379 180551 232137 541653 696411 1263857 1624959 3791571 4874877 8846999 11374713 26540997 34124139 79622991 238868973