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248280140 = 22523353279
BaseRepresentation
bin11101100110001…
…11010001001100
3122022011221022202
432303013101030
51002024431030
640345301032
76103226543
oct1663072114
9568157282
10248280140
111181695a9
126b194778
133c58c934
1424d8d15a
1516be4745
hexecc744c

248280140 has 24 divisors (see below), whose sum is σ = 523635840. Its totient is φ = 98883968.

The previous prime is 248280127. The next prime is 248280157. The reversal of 248280140 is 41082842.

248280140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21980 + ... + 31299.

It is an arithmetic number, because the mean of its divisors is an integer number (21818160).

Almost surely, 2248280140 is an apocalyptic number.

248280140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248280140 is an abundant number, since it is smaller than the sum of its proper divisors (275355700).

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

248280140 is a wasteful number, since it uses less digits than its factorization.

248280140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53521 (or 53519 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 248280140 is about 15756.9076915491. The cubic root of 248280140 is about 628.5126076894.

The spelling of 248280140 in words is "two hundred forty-eight million, two hundred eighty thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 233 466 932 1165 2330 4660 53279 106558 213116 266395 532790 1065580 12414007 24828014 49656028 62070035 124140070 248280140