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248052281 = 10916713627
BaseRepresentation
bin11101100100011…
…11101000111001
3122021202100202112
432302033220321
51002000133111
640340342105
76101260331
oct1662175071
9567670675
10248052281
11118023394
126b0a4935
133c50ccc9
1424d300c1
1516b9be8b
hexec8fa39

248052281 has 8 divisors (see below), whose sum is σ = 251845440. Its totient is φ = 244286928.

The previous prime is 248052271. The next prime is 248052367. The reversal of 248052281 is 182250842.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-248052281 is a prime.

It is a super-2 number, since 2×2480522812 = 123059868218605922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248052221) 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, 11390 + ... + 25016.

It is an arithmetic number, because the mean of its divisors is an integer number (31480680).

Almost surely, 2248052281 is an apocalyptic number.

It is an amenable number.

248052281 is a deficient number, since it is larger than the sum of its proper divisors (3793159).

248052281 is a wasteful number, since it uses less digits than its factorization.

248052281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 248052281 is about 15749.6755839605. The cubic root of 248052281 is about 628.3202764413.

The spelling of 248052281 in words is "two hundred forty-eight million, fifty-two thousand, two hundred eighty-one".

Divisors: 1 109 167 13627 18203 1485343 2275709 248052281