82909372 has 54 divisors (see below), whose sum is σ = 182834568. Its totient is φ = 32786208.

The previous prime is 82909361. The next prime is 82909381. The reversal of 82909372 is 27390928.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31873 + ... + 34375.

Almost surely, 2^82909372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82909372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91417284).

82909372 is an abundant number, since it is smaller than the sum of its proper divisors (99925196).

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

82909372 is a wasteful number, since it uses less digits than its factorization.

82909372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2525 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 82909372 is about 9105.4583629821. The cubic root of 82909372 is about 436.0482439672.

The spelling of 82909372 in words is "eighty-two million, nine hundred nine thousand, three hundred seventy-two".