82989612 has 72 divisors (see below), whose sum is σ = 222060384. Its totient is φ = 26078976.

The previous prime is 82989607. The next prime is 82989637. The reversal of 82989612 is 21698928.

82989612 is a `hidden beast` number, since 8 + 29 + 8 + 9 + 612 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59758 + ... + 61130.

It is an arithmetic number, because the mean of its divisors is an integer number (3084172).

Almost surely, 2^82989612 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 82989612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111030192).

82989612 is an abundant number, since it is smaller than the sum of its proper divisors (139070772).

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

82989612 is a wasteful number, since it uses less digits than its factorization.

82989612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1474 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 82989612 is about 9109.8634457384. The cubic root of 82989612 is about 436.1888683179.

The spelling of 82989612 in words is "eighty-two million, nine hundred eighty-nine thousand, six hundred twelve".