82138827 has 8 divisors (see below), whose sum is σ = 109642816. Its totient is φ = 54697032.

The previous prime is 82138811. The next prime is 82138831. The reversal of 82138827 is 72883128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82138827 - 2⁴ = 82138811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82138807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12373 + ... + 17814.

It is an arithmetic number, because the mean of its divisors is an integer number (13705352).

Almost surely, 2^82138827 is an apocalyptic number.

82138827 is a deficient number, since it is larger than the sum of its proper divisors (27503989).

82138827 is a wasteful number, since it uses less digits than its factorization.

82138827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31097.

The product of its digits is 43008, while the sum is 39.

The square root of 82138827 is about 9063.0473351958. The cubic root of 82138827 is about 434.6931856831.

The spelling of 82138827 in words is "eighty-two million, one hundred thirty-eight thousand, eight hundred twenty-seven".