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8971120 = 245112139
BaseRepresentation
bin100010001110…
…001101110000
3121212210001201
4202032031300
54244033440
6520140544
7136152604
oct42161560
917783051
108971120
115078154
123007754
131b21472
141297504
15bc319a
hex88e370

8971120 has 20 divisors (see below), whose sum is σ = 20858040. Its totient is φ = 3588416.

The previous prime is 8971117. The next prime is 8971129. The reversal of 8971120 is 211798.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8971129) 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, 55990 + ... + 56149.

It is an arithmetic number, because the mean of its divisors is an integer number (1042902).

Almost surely, 28971120 is an apocalyptic number.

8971120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8971120 is an abundant number, since it is smaller than the sum of its proper divisors (11886920).

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

8971120 is a wasteful number, since it uses less digits than its factorization.

8971120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112152 (or 112146 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 8971120 is about 2995.1827990959. The cubic root of 8971120 is about 207.7856519671.

The spelling of 8971120 in words is "eight million, nine hundred seventy-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 112139 224278 448556 560695 897112 1121390 1794224 2242780 4485560 8971120