81482860 has 12 divisors (see below), whose sum is σ = 171114048. Its totient is φ = 32593136.

The previous prime is 81482857. The next prime is 81482873. The reversal of 81482860 is 6828418.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037052 + ... + 2037091.

It is an arithmetic number, because the mean of its divisors is an integer number (14259504).

Almost surely, 2^81482860 is an apocalyptic number.

It is an amenable number.

81482860 is an abundant number, since it is smaller than the sum of its proper divisors (89631188).

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

81482860 is a wasteful number, since it uses less digits than its factorization.

81482860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074152 (or 4074150 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 81482860 is about 9026.7856959163. The cubic root of 81482860 is about 433.5329271192.

The spelling of 81482860 in words is "eighty-one million, four hundred eighty-two thousand, eight hundred sixty".