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58140681 = 319380227
BaseRepresentation
bin1101110111001…
…0100000001001
311001101212000120
43131302200021
5104341000211
65434053453
71304121234
oct335624011
9131355016
1058140681
112a900a55
121757a289
13c078891
147a1641b
155186d06
hex3772809

58140681 has 4 divisors (see below), whose sum is σ = 77520912. Its totient is φ = 38760452.

The previous prime is 58140673. The next prime is 58140683. The reversal of 58140681 is 18604185.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 58140681 - 23 = 58140673 is a prime.

It is a super-2 number, since 2×581406812 = 6760677574287522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (58140683) 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, 9690111 + ... + 9690116.

It is an arithmetic number, because the mean of its divisors is an integer number (19380228).

Almost surely, 258140681 is an apocalyptic number.

It is an amenable number.

58140681 is a deficient number, since it is larger than the sum of its proper divisors (19380231).

58140681 is a wasteful number, since it uses less digits than its factorization.

58140681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19380230.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 58140681 is about 7625.0036721303. The cubic root of 58140681 is about 387.4003761932.

The spelling of 58140681 in words is "fifty-eight million, one hundred forty thousand, six hundred eighty-one".

Divisors: 1 3 19380227 58140681