82121160 has 64 divisors (see below), whose sum is σ = 268764480. Its totient is φ = 19907840.

The previous prime is 82121159. The next prime is 82121209. The reversal of 82121160 is 6112128.

It is an unprimeable number.

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, 29787 + ... + 32426.

It is an arithmetic number, because the mean of its divisors is an integer number (4199445).

Almost surely, 2^82121160 is an apocalyptic number.

It is an amenable number.

82121160 is an abundant number, since it is smaller than the sum of its proper divisors (186643320).

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

82121160 is a wasteful number, since it uses less digits than its factorization.

82121160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62238 (or 62234 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 82121160 is about 9062.0726106118. The cubic root of 82121160 is about 434.6620178199.

Adding to 82121160 its reverse (6112128), we get a palindrome (88233288).

The spelling of 82121160 in words is "eighty-two million, one hundred twenty-one thousand, one hundred sixty".