82009724 has 12 divisors (see below), whose sum is σ = 143669904. Its totient is φ = 40961184.

The previous prime is 82009703. The next prime is 82009813. The reversal of 82009724 is 42790028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6497 + ... + 14360.

It is an arithmetic number, because the mean of its divisors is an integer number (11972492).

Almost surely, 2^82009724 is an apocalyptic number.

It is an amenable number.

82009724 is a deficient number, since it is larger than the sum of its proper divisors (61660180).

82009724 is a wasteful number, since it uses less digits than its factorization.

82009724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21844 (or 21842 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 82009724 is about 9055.9220403005. The cubic root of 82009724 is about 434.4653209623.

The spelling of 82009724 in words is "eighty-two million, nine thousand, seven hundred twenty-four".