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83207473 = 97857809
BaseRepresentation
bin1001111010110…
…10010100110001
312210120101012021
410331122110301
5132300114343
612131231441
72030152246
oct475322461
9183511167
1083207473
1142a72008
1223a48581
13143142bb
14b09d5cd
1574890ed
hex4f5a531

83207473 has 4 divisors (see below), whose sum is σ = 84065380. Its totient is φ = 82349568.

The previous prime is 83207447. The next prime is 83207483. The reversal of 83207473 is 37470238.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33547264 + 49660209 = 5792^2 + 7047^2 .

It is a cyclic number.

It is not a de Polignac number, because 83207473 - 29 = 83206961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83207483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428808 + ... + 429001.

It is an arithmetic number, because the mean of its divisors is an integer number (21016345).

Almost surely, 283207473 is an apocalyptic number.

It is an amenable number.

83207473 is a deficient number, since it is larger than the sum of its proper divisors (857907).

83207473 is an equidigital number, since it uses as much as digits as its factorization.

83207473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857906.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 83207473 is about 9121.8130325062. The cubic root of 83207473 is about 436.5702233123.

The spelling of 83207473 in words is "eighty-three million, two hundred seven thousand, four hundred seventy-three".

Divisors: 1 97 857809 83207473