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18068877 = 323164763
BaseRepresentation
bin100010011101…
…1010110001101
31020222222211200
41010323112031
514111201002
61443140113
7306403641
oct104732615
936888750
1018068877
11a221462
126074639
133988458
142584c21
1518bdb1c
hex113b58d

18068877 has 12 divisors (see below), whose sum is σ = 26941824. Its totient is φ = 11657160.

The previous prime is 18068873. The next prime is 18068879. The reversal of 18068877 is 77886081.

It is not a de Polignac number, because 18068877 - 22 = 18068873 is a prime.

It is a super-2 number, since 2×180688772 = 652968632082258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32103 + ... + 32660.

It is an arithmetic number, because the mean of its divisors is an integer number (2245152).

Almost surely, 218068877 is an apocalyptic number.

It is an amenable number.

18068877 is a deficient number, since it is larger than the sum of its proper divisors (8872947).

18068877 is a wasteful number, since it uses less digits than its factorization.

18068877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64800 (or 64797 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 18068877 is about 4250.7501690878. The cubic root of 18068877 is about 262.4079895213.

The spelling of 18068877 in words is "eighteen million, sixty-eight thousand, eight hundred seventy-seven".

Divisors: 1 3 9 31 93 279 64763 194289 582867 2007653 6022959 18068877