82455228 has 18 divisors (see below), whose sum is σ = 208428584. Its totient is φ = 27485064.

The previous prime is 82455221. The next prime is 82455251. The reversal of 82455228 is 82255428.

82455228 is a `hidden beast` number, since 82 + 4 + 552 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2290423 = 82455228 / (8 + 2 + 4 + 5 + 5 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 82455192 and 82455201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82455221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145176 + ... + 1145247.

Almost surely, 2^82455228 is an apocalyptic number.

It is an amenable number.

82455228 is an abundant number, since it is smaller than the sum of its proper divisors (125973356).

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

82455228 is a wasteful number, since it uses less digits than its factorization.

82455228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290433 (or 2290428 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 82455228 is about 9080.4861103357. The cubic root of 82455228 is about 435.2506205423.

The spelling of 82455228 in words is "eighty-two million, four hundred fifty-five thousand, two hundred twenty-eight".