82653820 has 24 divisors (see below), whose sum is σ = 173767104. Its totient is φ = 33024576.

The previous prime is 82653817. The next prime is 82653821. The reversal of 82653820 is 2835628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82653821) 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, 22557 + ... + 25963.

It is an arithmetic number, because the mean of its divisors is an integer number (7240296).

Almost surely, 2^82653820 is an apocalyptic number.

It is an amenable number.

82653820 is an abundant number, since it is smaller than the sum of its proper divisors (91113284).

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

82653820 is a wasteful number, since it uses less digits than its factorization.

82653820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629 (or 4627 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 82653820 is about 9091.4146313981. The cubic root of 82653820 is about 435.5997715979.

The spelling of 82653820 in words is "eighty-two million, six hundred fifty-three thousand, eight hundred twenty".