82090650 has 24 divisors (see below), whose sum is σ = 203585184. Its totient is φ = 21890800.

The previous prime is 82090649. The next prime is 82090667. The reversal of 82090650 is 5609028.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273486 + ... + 273785.

It is an arithmetic number, because the mean of its divisors is an integer number (8482716).

Almost surely, 2^82090650 is an apocalyptic number.

82090650 is an abundant number, since it is smaller than the sum of its proper divisors (121494534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82090650 is a wasteful number, since it uses less digits than its factorization.

82090650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547286 (or 547281 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 82090650 is about 9060.3890644939. The cubic root of 82090650 is about 434.6081819964.

Adding to 82090650 its reverse (5609028), we get a palindrome (87699678).

The spelling of 82090650 in words is "eighty-two million, ninety thousand, six hundred fifty".