81482160 has 80 divisors (see below), whose sum is σ = 253483776. Its totient is φ = 21652224.

The previous prime is 81482143. The next prime is 81482171. The reversal of 81482160 is 6128418.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 111717 + ... + 112443.

Almost surely, 2^81482160 is an apocalyptic number.

81482160 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 81482160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126741888).

81482160 is an abundant number, since it is smaller than the sum of its proper divisors (172001616).

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

81482160 is a wasteful number, since it uses less digits than its factorization.

81482160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 81482160 is about 9026.7469223414. The cubic root of 81482160 is about 433.5316856560.

The spelling of 81482160 in words is "eighty-one million, four hundred eighty-two thousand, one hundred sixty".