82428555 has 32 divisors (see below), whose sum is σ = 151453440. Its totient is φ = 37860480.

The previous prime is 82428551. The next prime is 82428557. The reversal of 82428555 is 55582428.

It is not a de Polignac number, because 82428555 - 2² = 82428551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82428551) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10012 + ... + 16281.

It is an arithmetic number, because the mean of its divisors is an integer number (4732920).

Almost surely, 2^82428555 is an apocalyptic number.

82428555 is a deficient number, since it is larger than the sum of its proper divisors (69024885).

82428555 is a wasteful number, since it uses less digits than its factorization.

82428555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26331.

The product of its digits is 128000, while the sum is 39.

The square root of 82428555 is about 9079.0172926369. The cubic root of 82428555 is about 435.2036831836.

The spelling of 82428555 in words is "eighty-two million, four hundred twenty-eight thousand, five hundred fifty-five".