82212450 has 24 divisors (see below), whose sum is σ = 203887248. Its totient is φ = 21923280.

The previous prime is 82212443. The next prime is 82212461. The reversal of 82212450 is 5421228.

It is a self number, because there is not a number n which added to its sum of digits gives 82212450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273892 + ... + 274191.

It is an arithmetic number, because the mean of its divisors is an integer number (8495302).

Almost surely, 2^82212450 is an apocalyptic number.

82212450 is an abundant number, since it is smaller than the sum of its proper divisors (121674798).

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

82212450 is a wasteful number, since it uses less digits than its factorization.

82212450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548098 (or 548093 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 82212450 is about 9067.1081387618. The cubic root of 82212450 is about 434.8230222072.

Adding to 82212450 its reverse (5421228), we get a palindrome (87633678).

The spelling of 82212450 in words is "eighty-two million, two hundred twelve thousand, four hundred fifty".