82906720 has 96 divisors (see below), whose sum is σ = 220231872. Its totient is φ = 29263872.

The previous prime is 82906711. The next prime is 82906721. The reversal of 82906720 is 2760928.

It is a super-3 number, since 3×82906720³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82906721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46974 + ... + 48706.

It is an arithmetic number, because the mean of its divisors is an integer number (2294082).

Almost surely, 2^82906720 is an apocalyptic number.

82906720 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 82906720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110115936).

82906720 is an abundant number, since it is smaller than the sum of its proper divisors (137325152).

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

82906720 is a wasteful number, since it uses less digits than its factorization.

82906720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 82906720 is about 9105.3127348818. The cubic root of 82906720 is about 436.0435946646.

The spelling of 82906720 in words is "eighty-two million, nine hundred six thousand, seven hundred twenty".