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80880585 = 3512742457
BaseRepresentation
bin1001101001000…
…10001111001001
312122012011022020
410310202033021
5131201134320
612005315053
72001321312
oct464421711
9178164266
1080880585
1141722865
1223105a89
13139ab146
14aa55609
157179940
hex4d223c9

80880585 has 16 divisors (see below), whose sum is σ = 130430976. Its totient is φ = 42795648.

The previous prime is 80880559. The next prime is 80880589. The reversal of 80880585 is 58508808.

It is not a de Polignac number, because 80880585 - 221 = 78783433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80880589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19324 + ... + 23133.

It is an arithmetic number, because the mean of its divisors is an integer number (8151936).

Almost surely, 280880585 is an apocalyptic number.

It is an amenable number.

80880585 is a deficient number, since it is larger than the sum of its proper divisors (49550391).

80880585 is a wasteful number, since it uses less digits than its factorization.

80880585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42592.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 80880585 is about 8993.3633864089. The cubic root of 80880585 is about 432.4621415401.

The spelling of 80880585 in words is "eighty million, eight hundred eighty thousand, five hundred eighty-five".

Divisors: 1 3 5 15 127 381 635 1905 42457 127371 212285 636855 5392039 16176117 26960195 80880585