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115004891 = 1922327143
BaseRepresentation
bin1101101101011…
…01010111011011
322000101212001102
412312231113123
5213420124031
615224542015
72564345141
oct666552733
9260355042
10115004891
1159a0a971
123262190b
131aa98441
14113b9591
15a16a7cb
hex6dad5db

115004891 has 8 divisors (see below), whose sum is σ = 121605120. Its totient is φ = 108459432.

The previous prime is 115004887. The next prime is 115004909. The reversal of 115004891 is 198400511.

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 115004891 - 22 = 115004887 is a prime.

It is a super-2 number, since 2×1150048912 = 26452249907843762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115004861) 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, 9335 + ... + 17808.

It is an arithmetic number, because the mean of its divisors is an integer number (15200640).

Almost surely, 2115004891 is an apocalyptic number.

115004891 is a deficient number, since it is larger than the sum of its proper divisors (6600229).

115004891 is a wasteful number, since it uses less digits than its factorization.

115004891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27385.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 115004891 is about 10724.0333363898. The cubic root of 115004891 is about 486.3013071160.

The spelling of 115004891 in words is "one hundred fifteen million, four thousand, eight hundred ninety-one".

Divisors: 1 19 223 4237 27143 515717 6052889 115004891