82811412 has 18 divisors (see below), whose sum is σ = 209328938. Its totient is φ = 27603792.

The previous prime is 82811401. The next prime is 82811429. The reversal of 82811412 is 21411828.

It can be written as a sum of positive squares in only one way, i.e., 65221776 + 17589636 = 8076^2 + 4194^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150123 + ... + 1150194.

Almost surely, 2^82811412 is an apocalyptic number.

It is an amenable number.

82811412 is an abundant number, since it is smaller than the sum of its proper divisors (126517526).

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

82811412 is a wasteful number, since it uses less digits than its factorization.

82811412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300327 (or 2300322 counting only the distinct ones).

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

The square root of 82811412 is about 9100.0775820869. The cubic root of 82811412 is about 435.8764414349.

The spelling of 82811412 in words is "eighty-two million, eight hundred eleven thousand, four hundred twelve".