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83506339 = 721704211
BaseRepresentation
bin1001111101000…
…11010010100011
312211010120011101
410332203102203
5132334200324
612141455231
72032535500
oct476432243
9184116141
1083506339
1143156604
1223b71517
13143ba347
14b13a4a7
1574e7944
hex4fa34a3

83506339 has 6 divisors (see below), whose sum is σ = 97140084. Its totient is φ = 71576820.

The previous prime is 83506337. The next prime is 83506369. The reversal of 83506339 is 93360538.

It is not a de Polignac number, because 83506339 - 21 = 83506337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83506298 and 83506307.

It is not an unprimeable number, because it can be changed into a prime (83506337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852057 + ... + 852154.

It is an arithmetic number, because the mean of its divisors is an integer number (16190014).

Almost surely, 283506339 is an apocalyptic number.

83506339 is a deficient number, since it is larger than the sum of its proper divisors (13633745).

83506339 is a wasteful number, since it uses less digits than its factorization.

83506339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704225 (or 1704218 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 83506339 is about 9138.1802893136. The cubic root of 83506339 is about 437.0922921736.

It can be divided in two parts, 83506 and 339, that added together give a triangular number (83845 = T409).

The spelling of 83506339 in words is "eighty-three million, five hundred six thousand, three hundred thirty-nine".

Divisors: 1 7 49 1704211 11929477 83506339