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8212008 = 233726983
BaseRepresentation
bin11111010100111000101000
3120110012202110
4133110320220
54100241013
6452002320
7126541500
oct37247050
916405673
108212008
1146a9892
1229003a0
131916a9c
14113aa00
15ac32c3
hex7d4e28

8212008 has 48 divisors (see below), whose sum is σ = 23885280. Its totient is φ = 2345952.

The previous prime is 8211991. The next prime is 8212019. The reversal of 8212008 is 8002128.

8212008 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2316 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (497610).

Almost surely, 28212008 is an apocalyptic number.

It is an amenable number.

8212008 is an abundant number, since it is smaller than the sum of its proper divisors (15673272).

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

8212008 is a wasteful number, since it uses less digits than its factorization.

8212008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7006 (or 6995 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 8212008 is about 2865.6601333724. The cubic root of 8212008 is about 201.7513523922.

It can be divided in two parts, 82 and 12008, that added together give a triangular number (12090 = T155).

The spelling of 8212008 in words is "eight million, two hundred twelve thousand, eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 49 56 84 98 147 168 196 294 392 588 1176 6983 13966 20949 27932 41898 48881 55864 83796 97762 146643 167592 195524 293286 342167 391048 586572 684334 1026501 1173144 1368668 2053002 2737336 4106004 8212008