82105450 has 24 divisors (see below), whose sum is σ = 174533472. Its totient is φ = 28150320.

The previous prime is 82105417. The next prime is 82105477. The reversal of 82105450 is 5450128.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 116944 + ... + 117643.

It is an arithmetic number, because the mean of its divisors is an integer number (7272228).

Almost surely, 2^82105450 is an apocalyptic number.

82105450 is an abundant number, since it is smaller than the sum of its proper divisors (92428022).

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

82105450 is a wasteful number, since it uses less digits than its factorization.

82105450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234606 (or 234601 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 82105450 is about 9061.2057696534. The cubic root of 82105450 is about 434.6342987124.

Adding to 82105450 its reverse (5450128), we get a palindrome (87555578).

The spelling of 82105450 in words is "eighty-two million, one hundred five thousand, four hundred fifty".