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8995161 = 371014241
BaseRepresentation
bin100010010100…
…000101011001
3121221000001010
4202110011121
54300321121
6520444133
7136312650
oct42240531
917830033
108995161
11509421a
123019649
131b2c3a6
1412a2197
15bca376
hex894159

8995161 has 16 divisors (see below), whose sum is σ = 13845888. Its totient is φ = 5088000.

The previous prime is 8995123. The next prime is 8995163. The reversal of 8995161 is 1615998.

8995161 is a nontrivial binomial coefficient, being equal to C(4242, 2).

It is not a de Polignac number, because 8995161 - 26 = 8995097 is a prime.

8995161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8995163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 4241.

It is an arithmetic number, because the mean of its divisors is an integer number (865368).

Almost surely, 28995161 is an apocalyptic number.

8995161 is the 4241-st triangular number and also the 2121-st hexagonal number.

It is an amenable number.

8995161 is a deficient number, since it is larger than the sum of its proper divisors (4850727).

8995161 is a wasteful number, since it uses less digits than its factorization.

8995161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352.

The product of its digits is 19440, while the sum is 39.

The square root of 8995161 is about 2999.1933915638. The cubic root of 8995161 is about 207.9710958973.

The spelling of 8995161 in words is "eight million, nine hundred ninety-five thousand, one hundred sixty-one".

Divisors: 1 3 7 21 101 303 707 2121 4241 12723 29687 89061 428341 1285023 2998387 8995161