82998720 has 336 divisors, whose sum is σ = 342351360. Its totient is φ = 18044928.

The previous prime is 82998703. The next prime is 82998731. The reversal of 82998720 is 2789928.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463591 + ... + 463769.

Almost surely, 2^82998720 is an apocalyptic number.

82998720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82998720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171175680).

82998720 is an abundant number, since it is smaller than the sum of its proper divisors (259352640).

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

82998720 is a wasteful number, since it uses less digits than its factorization.

82998720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 82998720 is about 9110.3633297471. The cubic root of 82998720 is about 436.2048247844.

The spelling of 82998720 in words is "eighty-two million, nine hundred ninety-eight thousand, seven hundred twenty".