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8200990 = 257791483
BaseRepresentation
bin11111010010001100011110
3120102122122101
4133102030132
54044412430
6451435314
7126464410
oct37221436
916378571
108200990
1146a1586
1228b5b3a
131911a75
1411369b0
15abedca
hex7d231e

8200990 has 32 divisors (see below), whose sum is σ = 17095680. Its totient is φ = 2774304.

The previous prime is 8200979. The next prime is 8200991. The reversal of 8200990 is 990028.

It is a happy number.

8200990 is a modest number, since divided by 990 gives 820 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8200991) 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, 4789 + ... + 6271.

It is an arithmetic number, because the mean of its divisors is an integer number (534240).

Almost surely, 28200990 is an apocalyptic number.

8200990 is an abundant number, since it is smaller than the sum of its proper divisors (8894690).

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

8200990 is a wasteful number, since it uses less digits than its factorization.

8200990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 8200990 is about 2863.7370689363. The cubic root of 8200990 is about 201.6610824976.

The spelling of 8200990 in words is "eight million, two hundred thousand, nine hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 79 158 395 553 790 1106 1483 2765 2966 5530 7415 10381 14830 20762 51905 103810 117157 234314 585785 820099 1171570 1640198 4100495 8200990