82811943 has 16 divisors (see below), whose sum is σ = 126643200. Its totient is φ = 53426520.

The previous prime is 82811941. The next prime is 82811951. The reversal of 82811943 is 34911828.

It is not a de Polignac number, because 82811943 - 2¹ = 82811941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82811898 and 82811907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82811941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48633 + ... + 50306.

It is an arithmetic number, because the mean of its divisors is an integer number (7915200).

Almost surely, 2^82811943 is an apocalyptic number.

82811943 is a deficient number, since it is larger than the sum of its proper divisors (43831257).

82811943 is a wasteful number, since it uses less digits than its factorization.

82811943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98979 (or 98973 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 82811943 is about 9100.1067576155. The cubic root of 82811943 is about 435.8773730693.

The spelling of 82811943 in words is "eighty-two million, eight hundred eleven thousand, nine hundred forty-three".