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8500880 = 245106261
BaseRepresentation
bin100000011011…
…011010010000
3120222220000102
4200123122100
54134012010
6502111532
7132153623
oct40333220
916886012
108500880
114886923
122a1b5a8
1319b840b
1411b3dba
15b2dba5
hex81b690

8500880 has 20 divisors (see below), whose sum is σ = 19764732. Its totient is φ = 3400320.

The previous prime is 8500879. The next prime is 8500883. The reversal of 8500880 is 880058.

It can be written as a sum of positive squares in 2 ways, for example, as 861184 + 7639696 = 928^2 + 2764^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8500883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53051 + ... + 53210.

Almost surely, 28500880 is an apocalyptic number.

8500880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8500880 is an abundant number, since it is smaller than the sum of its proper divisors (11263852).

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

8500880 is a wasteful number, since it uses less digits than its factorization.

8500880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106274 (or 106268 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 8500880 is about 2915.6268622716. The cubic root of 8500880 is about 204.0897977087.

The spelling of 8500880 in words is "eight million, five hundred thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 106261 212522 425044 531305 850088 1062610 1700176 2125220 4250440 8500880