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83085407 = 237183613
BaseRepresentation
bin1001111001111…
…00100001011111
312210100011202022
410330330201133
5132232213112
612124450355
72026133336
oct474744137
9183304668
1083085407
1142999329
12239a99bb
13142a0882
14b06ad1d
157462d72
hex4f3c85f

83085407 has 16 divisors (see below), whose sum is σ = 89123328. Its totient is φ = 77283360.

The previous prime is 83085403. The next prime is 83085413. The reversal of 83085407 is 70458038.

It is a cyclic number.

It is not a de Polignac number, because 83085407 - 22 = 83085403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83085403) 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, 135233 + ... + 135845.

It is an arithmetic number, because the mean of its divisors is an integer number (5570208).

Almost surely, 283085407 is an apocalyptic number.

83085407 is a deficient number, since it is larger than the sum of its proper divisors (6037921).

83085407 is a wasteful number, since it uses less digits than its factorization.

83085407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 83085407 is about 9115.1196920282. The cubic root of 83085407 is about 436.3566348795.

The spelling of 83085407 in words is "eighty-three million, eighty-five thousand, four hundred seven".

Divisors: 1 23 71 83 613 1633 1909 5893 14099 43523 50879 135539 1001029 1170217 3612409 83085407