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85615060 = 22517251809
BaseRepresentation
bin1010001101001…
…10000111010100
312222002200210011
411012212013110
5133404140220
612255010004
72056500406
oct506460724
9188080704
1085615060
1144366953
1224809904
13149780cb
14b528b76
1577b265a
hex51a61d4

85615060 has 24 divisors (see below), whose sum is σ = 190368360. Its totient is φ = 32231424.

The previous prime is 85615027. The next prime is 85615069. The reversal of 85615060 is 6051658.

It can be written as a sum of positive squares in 4 ways, for example, as 3857296 + 81757764 = 1964^2 + 9042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85615069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125565 + ... + 126244.

It is an arithmetic number, because the mean of its divisors is an integer number (7932015).

Almost surely, 285615060 is an apocalyptic number.

It is an amenable number.

85615060 is an abundant number, since it is smaller than the sum of its proper divisors (104753300).

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

85615060 is a wasteful number, since it uses less digits than its factorization.

85615060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251835 (or 251833 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 85615060 is about 9252.8406449047. The cubic root of 85615060 is about 440.7409348035.

The spelling of 85615060 in words is "eighty-five million, six hundred fifteen thousand, sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 251809 503618 1007236 1259045 2518090 4280753 5036180 8561506 17123012 21403765 42807530 85615060