822425628 has 96 divisors (see below), whose sum is σ = 2045901312. Its totient is φ = 256608000.

The previous prime is 822425579. The next prime is 822425657. The reversal of 822425628 is 826524228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4543698 + ... + 4543878.

It is an arithmetic number, because the mean of its divisors is an integer number (21311472).

Almost surely, 2^822425628 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 822425628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022950656).

822425628 is an abundant number, since it is smaller than the sum of its proper divisors (1223475684).

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

822425628 is a wasteful number, since it uses less digits than its factorization.

822425628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 473 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 822425628 is about 28677.9641536843. The cubic root of 822425628 is about 936.9121659627.

The spelling of 822425628 in words is "eight hundred twenty-two million, four hundred twenty-five thousand, six hundred twenty-eight".