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253488693 = 3187145161
BaseRepresentation
bin11110001101111…
…10111000110101
3122122222120010010
433012332320311
51004343114233
641053050433
76165422043
oct1706767065
9578876103
10253488693
111200a6897
1270a86a19
1340694613
1425947393
15173c2b63
hexf1bee35

253488693 has 8 divisors (see below), whose sum is σ = 338173056. Its totient is φ = 168898400.

The previous prime is 253488679. The next prime is 253488701. The reversal of 253488693 is 396884352.

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

It is a cyclic number.

It is not a de Polignac number, because 253488693 - 226 = 186379829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253488293) 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, 16968 + ... + 28193.

It is an arithmetic number, because the mean of its divisors is an integer number (42271632).

Almost surely, 2253488693 is an apocalyptic number.

It is an amenable number.

253488693 is a deficient number, since it is larger than the sum of its proper divisors (84684363).

253488693 is a wasteful number, since it uses less digits than its factorization.

253488693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47035.

The product of its digits is 1244160, while the sum is 48.

The square root of 253488693 is about 15921.3282423295. The cubic root of 253488693 is about 632.8773175039.

The spelling of 253488693 in words is "two hundred fifty-three million, four hundred eighty-eight thousand, six hundred ninety-three".

Divisors: 1 3 1871 5613 45161 135483 84496231 253488693