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245145260 = 22512257263
BaseRepresentation
bin11101001110010…
…01111010101100
3122002021200002002
432213021322230
51000224122020
640154151432
76034462133
oct1647117254
9562250062
10245145260
11116418298
126a122578
133ba32a89
14247b491a
15167c5975
hexe9c9eac

245145260 has 12 divisors (see below), whose sum is σ = 514805088. Its totient is φ = 98058096.

The previous prime is 245145259. The next prime is 245145283. The reversal of 245145260 is 62541542.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128612 + ... + 6128651.

It is an arithmetic number, because the mean of its divisors is an integer number (42900424).

Almost surely, 2245145260 is an apocalyptic number.

245145260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245145260 is an abundant number, since it is smaller than the sum of its proper divisors (269659828).

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

245145260 is a wasteful number, since it uses less digits than its factorization.

245145260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257272 (or 12257270 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 245145260 is about 15657.1153154085. The cubic root of 245145260 is about 625.8561153044.

The spelling of 245145260 in words is "two hundred forty-five million, one hundred forty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 12257263 24514526 49029052 61286315 122572630 245145260