82509902 has 8 divisors (see below), whose sum is σ = 123986376. Its totient is φ = 41181112.

The previous prime is 82509893. The next prime is 82509943. The reversal of 82509902 is 20990528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35513 + ... + 37764.

It is an arithmetic number, because the mean of its divisors is an integer number (15498297).

Almost surely, 2^82509902 is an apocalyptic number.

82509902 is a deficient number, since it is larger than the sum of its proper divisors (41476474).

82509902 is a wasteful number, since it uses less digits than its factorization.

82509902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73842.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 82509902 is about 9083.4961330977. The cubic root of 82509902 is about 435.3468005551.

The spelling of 82509902 in words is "eighty-two million, five hundred nine thousand, nine hundred two".