82640824 has 16 divisors (see below), whose sum is σ = 177087600. Its totient is φ = 35417472.

The previous prime is 82640819. The next prime is 82640827. The reversal of 82640824 is 42804628.

It is a self number, because there is not a number n which added to its sum of digits gives 82640824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82640827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737809 + ... + 737920.

It is an arithmetic number, because the mean of its divisors is an integer number (11067975).

Almost surely, 2^82640824 is an apocalyptic number.

It is an amenable number.

82640824 is an abundant number, since it is smaller than the sum of its proper divisors (94446776).

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

82640824 is a wasteful number, since it uses less digits than its factorization.

82640824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475742 (or 1475738 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 82640824 is about 9090.6998630468. The cubic root of 82640824 is about 435.5769400201.

The spelling of 82640824 in words is "eighty-two million, six hundred forty thousand, eight hundred twenty-four".