82272512 has 72 divisors (see below), whose sum is σ = 193869312. Its totient is φ = 34099200.

The previous prime is 82272461. The next prime is 82272521. The reversal of 82272512 is 21527228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54812 + ... + 56292.

Almost surely, 2^82272512 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 82272512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96934656).

82272512 is an abundant number, since it is smaller than the sum of its proper divisors (111596800).

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

82272512 is a wasteful number, since it uses less digits than its factorization.

82272512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1521 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 82272512 is about 9070.4196154313. The cubic root of 82272512 is about 434.9288860717.

The spelling of 82272512 in words is "eighty-two million, two hundred seventy-two thousand, five hundred twelve".