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8712680 = 235673251
BaseRepresentation
bin100001001111…
…000111101000
3121101122112212
4201033013220
54212301210
6510424252
7134025254
oct41170750
917348485
108712680
114a10a69
122b02088
131a60942
14122b264
15b71805
hex84f1e8

8712680 has 32 divisors (see below), whose sum is σ = 19902240. Its totient is φ = 3432000.

The previous prime is 8712677. The next prime is 8712701. The reversal of 8712680 is 862178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055 + ... + 4305.

It is an arithmetic number, because the mean of its divisors is an integer number (621945).

Almost surely, 28712680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8712680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9951120).

8712680 is an abundant number, since it is smaller than the sum of its proper divisors (11189560).

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

8712680 is a wasteful number, since it uses less digits than its factorization.

8712680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 8712680 is about 2951.7249194327. The cubic root of 8712680 is about 205.7708829795.

The spelling of 8712680 in words is "eight million, seven hundred twelve thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 67 134 268 335 536 670 1340 2680 3251 6502 13004 16255 26008 32510 65020 130040 217817 435634 871268 1089085 1742536 2178170 4356340 8712680