82534220 has 24 divisors (see below), whose sum is σ = 176165808. Its totient is φ = 32472000.

The previous prime is 82534219. The next prime is 82534237. The reversal of 82534220 is 2243528.

It is a self number, because there is not a number n which added to its sum of digits gives 82534220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32606 + ... + 35045.

It is an arithmetic number, because the mean of its divisors is an integer number (7340242).

Almost surely, 2^82534220 is an apocalyptic number.

It is an amenable number.

82534220 is an abundant number, since it is smaller than the sum of its proper divisors (93631588).

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

82534220 is a wasteful number, since it uses less digits than its factorization.

82534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67721 (or 67719 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 82534220 is about 9084.8346159960. The cubic root of 82534220 is about 435.3895660226.

Adding to 82534220 its reverse (2243528), we get a palindrome (84777748).

The spelling of 82534220 in words is "eighty-two million, five hundred thirty-four thousand, two hundred twenty".