82130229 has 6 divisors (see below), whose sum is σ = 118632566. Its totient is φ = 54753480.

The previous prime is 82130227. The next prime is 82130287. The reversal of 82130229 is 92203128.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 77845329 + 4284900 = 8823^2 + 2070^2 .

It is not a de Polignac number, because 82130229 - 2¹ = 82130227 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 (82130221) 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, 4562782 + ... + 4562799.

Almost surely, 2^82130229 is an apocalyptic number.

It is an amenable number.

82130229 is a deficient number, since it is larger than the sum of its proper divisors (36502337).

82130229 is a wasteful number, since it uses less digits than its factorization.

82130229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9125587 (or 9125584 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 82130229 is about 9062.5729790165. The cubic root of 82130229 is about 434.6780177755.

The spelling of 82130229 in words is "eighty-two million, one hundred thirty thousand, two hundred twenty-nine".