82990 has 16 divisors (see below), whose sum is σ = 153648. Its totient is φ = 32256.

The previous prime is 82981. The next prime is 82997. The reversal of 82990 is 9928.

It is a happy number.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82997) by changing a digit.

82990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (9603).

2⁸²⁹⁹⁰ is an apocalyptic number.

82990 is a deficient number, since it is larger than the sum of its proper divisors (70658).

82990 is a wasteful number, since it uses less digits than its factorization.

82990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 82990 is about 288.0798500416. The cubic root of 82990 is about 43.6189548086.

It can be divided in two parts, 829 and 90, that added together give a palindrome (919).

The spelling of 82990 in words is "eighty-two thousand, nine hundred ninety".