82799420 has 48 divisors (see below), whose sum is σ = 192931200. Its totient is φ = 29593920.

The previous prime is 82799417. The next prime is 82799429. The reversal of 82799420 is 2499728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82799429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9791 + ... + 16169.

It is an arithmetic number, because the mean of its divisors is an integer number (4019400).

Almost surely, 2^82799420 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 82799420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96465600).

82799420 is an abundant number, since it is smaller than the sum of its proper divisors (110131780).

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

82799420 is a wasteful number, since it uses less digits than its factorization.

82799420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458 (or 6456 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 82799420 is about 9099.4186627498. The cubic root of 82799420 is about 435.8554005240.

The spelling of 82799420 in words is "eighty-two million, seven hundred ninety-nine thousand, four hundred twenty".