822453228 has 108 divisors (see below), whose sum is σ = 2288690040. Its totient is φ = 248320512.

The previous prime is 822453221. The next prime is 822453283. The reversal of 822453228 is 822354228.

822453228 is a `hidden beast` number, since 82 + 24 + 532 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 822453192 and 822453201.

It is not an unprimeable number, because it can be changed into a prime (822453221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 360700 + ... + 362972.

Almost surely, 2^822453228 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 822453228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144345020).

822453228 is an abundant number, since it is smaller than the sum of its proper divisors (1466236812).

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

822453228 is a wasteful number, since it uses less digits than its factorization.

822453228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2320 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 822453228 is about 28678.4453553536. The cubic root of 822453228 is about 936.9226465402.

The spelling of 822453228 in words is "eight hundred twenty-two million, four hundred fifty-three thousand, two hundred twenty-eight".