82727880 has 64 divisors (see below), whose sum is σ = 249359040. Its totient is φ = 21956352.

The previous prime is 82727867. The next prime is 82727921. The reversal of 82727880 is 8872728.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25722 + ... + 28758.

It is an arithmetic number, because the mean of its divisors is an integer number (3896235).

Almost surely, 2^82727880 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 82727880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124679520).

82727880 is an abundant number, since it is smaller than the sum of its proper divisors (166631160).

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

82727880 is a wasteful number, since it uses less digits than its factorization.

82727880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 82727880 is about 9095.4867929100. The cubic root of 82727880 is about 435.7298357154.

The spelling of 82727880 in words is "eighty-two million, seven hundred twenty-seven thousand, eight hundred eighty".