82997120 has 64 divisors (see below), whose sum is σ = 203318640. Its totient is φ = 32378880.

The previous prime is 82997119. The next prime is 82997147. The reversal of 82997120 is 2179928.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 24659 + ... + 27821.

Almost surely, 2^82997120 is an apocalyptic number.

82997120 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 82997120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101659320).

82997120 is an abundant number, since it is smaller than the sum of its proper divisors (120321520).

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

82997120 is a wasteful number, since it uses less digits than its factorization.

82997120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 82997120 is about 9110.2755172388. The cubic root of 82997120 is about 436.2020218006.

The spelling of 82997120 in words is "eighty-two million, nine hundred ninety-seven thousand, one hundred twenty".