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253067893 = 1319466761
BaseRepresentation
bin11110001010110…
…00001001110101
3122122012011212221
433011120021311
51004241133033
641040042341
76162020161
oct1705301165
9578164787
10253067893
1111a939721
12709033b1
1340577c20
1425877ca1
151733d12d
hexf158275

253067893 has 4 divisors (see below), whose sum is σ = 272534668. Its totient is φ = 233601120.

The previous prime is 253067879. The next prime is 253067917. The reversal of 253067893 is 398760352.

253067893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44063044 + 209004849 = 6638^2 + 14457^2 .

It is a cyclic number.

It is not a de Polignac number, because 253067893 - 25 = 253067861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253067803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9733368 + ... + 9733393.

It is an arithmetic number, because the mean of its divisors is an integer number (68133667).

Almost surely, 2253067893 is an apocalyptic number.

It is an amenable number.

253067893 is a deficient number, since it is larger than the sum of its proper divisors (19466775).

253067893 is a wasteful number, since it uses less digits than its factorization.

253067893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19466774.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 253067893 is about 15908.1077755967. The cubic root of 253067893 is about 632.5269241300.

The spelling of 253067893 in words is "two hundred fifty-three million, sixty-seven thousand, eight hundred ninety-three".

Divisors: 1 13 19466761 253067893