81411282 has 12 divisors (see below), whose sum is σ = 176391150. Its totient is φ = 27137088.

The previous prime is 81411269. The next prime is 81411289. The reversal of 81411282 is 28211418.

It can be written as a sum of positive squares in only one way, i.e., 60699681 + 20711601 = 7791^2 + 4551^2 .

It is not an unprimeable number, because it can be changed into a prime (81411289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2261407 + ... + 2261442.

Almost surely, 2^81411282 is an apocalyptic number.

81411282 is an abundant number, since it is smaller than the sum of its proper divisors (94979868).

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

81411282 is a wasteful number, since it uses less digits than its factorization.

81411282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522857 (or 4522854 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 81411282 is about 9022.8200691358. The cubic root of 81411282 is about 433.4059453599.

The spelling of 81411282 in words is "eighty-one million, four hundred eleven thousand, two hundred eighty-two".