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8197090 = 2511431733
BaseRepresentation
bin11111010001001111100010
3120102110021221
4133101033202
54044301330
6451405254
7126450136
oct37211742
916373257
108197090
114699660
1228b382a
131910065
1411353c6
15abdb7a
hex7d13e2

8197090 has 32 divisors (see below), whose sum is σ = 16479936. Its totient is φ = 2909760.

The previous prime is 8197081. The next prime is 8197093. The reversal of 8197090 is 907918.

It is not an unprimeable number, because it can be changed into a prime (8197093) 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 15 ways as a sum of consecutive naturals, for example, 3864 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (514998).

Almost surely, 28197090 is an apocalyptic number.

8197090 is an abundant number, since it is smaller than the sum of its proper divisors (8282846).

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

8197090 is a wasteful number, since it uses less digits than its factorization.

8197090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 8197090 is about 2863.0560595280. The cubic root of 8197090 is about 201.6291106289.

The spelling of 8197090 in words is "eight million, one hundred ninety-seven thousand, ninety".

Divisors: 1 2 5 10 11 22 43 55 86 110 215 430 473 946 1733 2365 3466 4730 8665 17330 19063 38126 74519 95315 149038 190630 372595 745190 819709 1639418 4098545 8197090