82811446 has 4 divisors (see below), whose sum is σ = 124217172. Its totient is φ = 41405722.

The previous prime is 82811441. The next prime is 82811453. The reversal of 82811446 is 64411828.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×82811446² = 13715471177221832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82811441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20702860 + ... + 20702863.

It is an arithmetic number, because the mean of its divisors is an integer number (31054293).

Almost surely, 2^82811446 is an apocalyptic number.

82811446 is a deficient number, since it is larger than the sum of its proper divisors (41405726).

82811446 is a wasteful number, since it uses less digits than its factorization.

82811446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41405725.

The product of its digits is 12288, while the sum is 34.

The square root of 82811446 is about 9100.0794502026. The cubic root of 82811446 is about 435.8765010877.

The spelling of 82811446 in words is "eighty-two million, eight hundred eleven thousand, four hundred forty-six".