82489512 has 128 divisors (see below), whose sum is σ = 249200640. Its totient is φ = 22256640.

The previous prime is 82489501. The next prime is 82489541. The reversal of 82489512 is 21598428.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244608 + ... + 244944.

It is an arithmetic number, because the mean of its divisors is an integer number (1946880).

Almost surely, 2^82489512 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 82489512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124600320).

82489512 is an abundant number, since it is smaller than the sum of its proper divisors (166711128).

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

82489512 is a wasteful number, since it uses less digits than its factorization.

82489512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 82489512 is about 9082.3736985438. The cubic root of 82489512 is about 435.3109363644.

The spelling of 82489512 in words is "eighty-two million, four hundred eighty-nine thousand, five hundred twelve".