82909512 has 48 divisors (see below), whose sum is σ = 256626240. Its totient is φ = 23688288.

The previous prime is 82909499. The next prime is 82909517. The reversal of 82909512 is 21590928.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (82909517) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 81748 + ... + 82755.

It is an arithmetic number, because the mean of its divisors is an integer number (5346380).

Almost surely, 2^82909512 is an apocalyptic number.

It is an amenable number.

82909512 is an abundant number, since it is smaller than the sum of its proper divisors (173716728).

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

82909512 is a wasteful number, since it uses less digits than its factorization.

82909512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164522 (or 164515 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 82909512 is about 9105.4660506753. The cubic root of 82909512 is about 436.0484894027.

The spelling of 82909512 in words is "eighty-two million, nine hundred nine thousand, five hundred twelve".