82550784 has 56 divisors (see below), whose sum is σ = 220187520. Its totient is φ = 27508736.

The previous prime is 82550779. The next prime is 82550789. The reversal of 82550784 is 48705528.

It is an interprime number because it is at equal distance from previous prime (82550779) and next prime (82550789).

It is not an unprimeable number, because it can be changed into a prime (82550789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22897 + ... + 26255.

It is an arithmetic number, because the mean of its divisors is an integer number (3931920).

Almost surely, 2^82550784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82550784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110093760).

82550784 is an abundant number, since it is smaller than the sum of its proper divisors (137636736).

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

82550784 is an equidigital number, since it uses as much as digits as its factorization.

82550784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388 (or 3364 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 82550784 is about 9085.7461994049. The cubic root of 82550784 is about 435.4186905497.

The spelling of 82550784 in words is "eighty-two million, five hundred fifty thousand, seven hundred eighty-four".