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85905370 = 258590537
BaseRepresentation
bin1010001111011…
…00111111011010
312222122110000101
411013230333122
5133442432440
612305130014
72062116655
oct507547732
9188573011
1085905370
1144544a81
122492990a
1314a4a2a5
14b5a289c
15781d69a
hex51ecfda

85905370 has 8 divisors (see below), whose sum is σ = 154629684. Its totient is φ = 34362144.

The previous prime is 85905367. The next prime is 85905377. The reversal of 85905370 is 7350958.

It can be written as a sum of positive squares in 2 ways, for example, as 68840209 + 17065161 = 8297^2 + 4131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85905377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4295259 + ... + 4295278.

Almost surely, 285905370 is an apocalyptic number.

85905370 is a deficient number, since it is larger than the sum of its proper divisors (68724314).

85905370 is a wasteful number, since it uses less digits than its factorization.

85905370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590544.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 85905370 is about 9268.5149835343. The cubic root of 85905370 is about 441.2385386521.

The spelling of 85905370 in words is "eighty-five million, nine hundred five thousand, three hundred seventy".

Divisors: 1 2 5 10 8590537 17181074 42952685 85905370