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8681898 = 231976157
BaseRepresentation
bin100001000111…
…100110101010
3121100002022210
4201013212222
54210310043
6510025550
7133536441
oct41074652
917302283
108681898
11499a925
122aa82b6
131a4c924
14121dd58
15b67633
hex8479aa

8681898 has 16 divisors (see below), whose sum is σ = 18277920. Its totient is φ = 2741616.

The previous prime is 8681857. The next prime is 8681899. The reversal of 8681898 is 8981868.

8681898 is a strobogrammatic number because it is the same when read upside-down.

It is not an unprimeable number, because it can be changed into a prime (8681899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37965 + ... + 38192.

It is an arithmetic number, because the mean of its divisors is an integer number (1142370).

Almost surely, 28681898 is an apocalyptic number.

8681898 is an abundant number, since it is smaller than the sum of its proper divisors (9596022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8681898 is a wasteful number, since it uses less digits than its factorization.

8681898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76181.

The product of its digits is 221184, while the sum is 48.

The square root of 8681898 is about 2946.5060665134. The cubic root of 8681898 is about 205.5282667234.

The spelling of 8681898 in words is "eight million, six hundred eighty-one thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 19 38 57 114 76157 152314 228471 456942 1446983 2893966 4340949 8681898