82409876 has 6 divisors (see below), whose sum is σ = 144217290. Its totient is φ = 41204936.

The previous prime is 82409869. The next prime is 82409879. The reversal of 82409876 is 67890428.

It can be written as a sum of positive squares in only one way, i.e., 82373776 + 36100 = 9076^2 + 190^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82409879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10301231 + ... + 10301238.

It is an arithmetic number, because the mean of its divisors is an integer number (24036215).

Almost surely, 2^82409876 is an apocalyptic number.

It is an amenable number.

82409876 is a deficient number, since it is larger than the sum of its proper divisors (61807414).

82409876 is a wasteful number, since it uses less digits than its factorization.

82409876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20602473 (or 20602471 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 82409876 is about 9077.9885437249. The cubic root of 82409876 is about 435.1708071019.

The spelling of 82409876 in words is "eighty-two million, four hundred nine thousand, eight hundred seventy-six".