82635220 has 24 divisors (see below), whose sum is σ = 173757024. Its totient is φ = 33011616.

The previous prime is 82635209. The next prime is 82635221. The reversal of 82635220 is 2253628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82635221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16759 + ... + 21121.

It is an arithmetic number, because the mean of its divisors is an integer number (7239876).

Almost surely, 2^82635220 is an apocalyptic number.

It is an amenable number.

82635220 is an abundant number, since it is smaller than the sum of its proper divisors (91121804).

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

82635220 is a wasteful number, since it uses less digits than its factorization.

82635220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5319 (or 5317 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 82635220 is about 9090.3916307275. The cubic root of 82635220 is about 435.5670940859.

Adding to 82635220 its reverse (2253628), we get a palindrome (84888848).

It can be divided in two parts, 826 and 35220, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 82635220 in words is "eighty-two million, six hundred thirty-five thousand, two hundred twenty".