81483012 has 108 divisors (see below), whose sum is σ = 227813040. Its totient is φ = 24538176.

The previous prime is 81482959. The next prime is 81483029. The reversal of 81483012 is 21038418.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 358843 + ... + 359069.

It is an arithmetic number, because the mean of its divisors is an integer number (2109380).

Almost surely, 2^81483012 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 81483012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113906520).

81483012 is an abundant number, since it is smaller than the sum of its proper divisors (146330028).

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

81483012 is a wasteful number, since it uses less digits than its factorization.

81483012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 81483012 is about 9026.7941152992. The cubic root of 81483012 is about 433.5331966931.

The spelling of 81483012 in words is "eighty-one million, four hundred eighty-three thousand, twelve".