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82803397 = 131632087
BaseRepresentation
bin1001110111101…
…11101011000101
312202210211220111
410323313223011
5132144202042
612114433021
72023550215
oct473675305
9182724814
1082803397
1142816466
1223892771
13142023c1
14add6245
157409517
hex4ef7ac5

82803397 has 4 divisors (see below), whose sum is σ = 83435616. Its totient is φ = 82171180.

The previous prime is 82803361. The next prime is 82803419. The reversal of 82803397 is 79330828.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82803397 - 223 = 74414789 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 (82803797) 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, 315913 + ... + 316174.

It is an arithmetic number, because the mean of its divisors is an integer number (20858904).

Almost surely, 282803397 is an apocalyptic number.

It is an amenable number.

82803397 is a deficient number, since it is larger than the sum of its proper divisors (632219).

82803397 is a wasteful number, since it uses less digits than its factorization.

82803397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632218.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 82803397 is about 9099.6371905697. The cubic root of 82803397 is about 435.8623787097.

The spelling of 82803397 in words is "eighty-two million, eight hundred three thousand, three hundred ninety-seven".

Divisors: 1 131 632087 82803397