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248132381 = 7192964333
BaseRepresentation
bin11101100101000…
…11001100011101
3122021220102122012
432302203030131
51002010214011
640342201005
76102043010
oct1662431435
9567812565
10248132381
11118078592
126b123165
133c53a5c3
1424d51377
1516bb5a8b
hexeca331d

248132381 has 16 divisors (see below), whose sum is σ = 308803200. Its totient is φ = 194539968.

The previous prime is 248132371. The next prime is 248132387. The reversal of 248132381 is 183231842.

It is not a de Polignac number, because 248132381 - 214 = 248115997 is a prime.

It is a super-2 number, since 2×2481323812 = 123139357001458322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248132387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28310 + ... + 36023.

It is an arithmetic number, because the mean of its divisors is an integer number (19300200).

Almost surely, 2248132381 is an apocalyptic number.

It is an amenable number.

248132381 is a deficient number, since it is larger than the sum of its proper divisors (60670819).

248132381 is a wasteful number, since it uses less digits than its factorization.

248132381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64388.

The product of its digits is 9216, while the sum is 32.

The square root of 248132381 is about 15752.2182882285. The cubic root of 248132381 is about 628.3879006771.

The spelling of 248132381 in words is "two hundred forty-eight million, one hundred thirty-two thousand, three hundred eighty-one".

Divisors: 1 7 19 29 133 203 551 3857 64333 450331 1222327 1865657 8556289 13059599 35447483 248132381