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85130480 = 2451064131
BaseRepresentation
bin1010001001011…
…11110011110000
312221012002001202
411010233303300
5133243133410
612240350332
72052411551
oct504576360
9187162052
1085130480
1144065876
12246153a8
1314838686
14b440328
157718ca5
hex512fcf0

85130480 has 20 divisors (see below), whose sum is σ = 197928552. Its totient is φ = 34052160.

The previous prime is 85130477. The next prime is 85130503. The reversal of 85130480 is 8403158.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531986 + ... + 532145.

Almost surely, 285130480 is an apocalyptic number.

85130480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85130480 is an abundant number, since it is smaller than the sum of its proper divisors (112798072).

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

85130480 is a wasteful number, since it uses less digits than its factorization.

85130480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064144 (or 1064138 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 85130480 is about 9226.6180152860. The cubic root of 85130480 is about 439.9078319343.

The spelling of 85130480 in words is "eighty-five million, one hundred thirty thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1064131 2128262 4256524 5320655 8513048 10641310 17026096 21282620 42565240 85130480