82280128 has 28 divisors (see below), whose sum is σ = 186600592. Its totient is φ = 35262720.

The previous prime is 82280123. The next prime is 82280129. The reversal of 82280128 is 82108228.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 82280128.

It is not an unprimeable number, because it can be changed into a prime (82280123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91383 + ... + 92278.

Almost surely, 2^82280128 is an apocalyptic number.

It is an amenable number.

82280128 is an abundant number, since it is smaller than the sum of its proper divisors (104320464).

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

82280128 is a wasteful number, since it uses less digits than its factorization.

82280128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183680 (or 183670 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 82280128 is about 9070.8394319379. The cubic root of 82280128 is about 434.9423061724.

The spelling of 82280128 in words is "eighty-two million, two hundred eighty thousand, one hundred twenty-eight".