634822228 has 12 divisors (see below), whose sum is σ = 1176288372. Its totient is φ = 298739840.

The previous prime is 634822217. The next prime is 634822231. The reversal of 634822228 is 822228436.

It can be written as a sum of positive squares in 2 ways, for example, as 481012624 + 153809604 = 21932^2 + 12402^2 .

It is a super-2 number, since 2×634822228² = 805998522325767968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4667743 + ... + 4667878.

It is an arithmetic number, because the mean of its divisors is an integer number (98024031).

Almost surely, 2^634822228 is an apocalyptic number.

634822228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

634822228 is a deficient number, since it is larger than the sum of its proper divisors (541466144).

634822228 is a wasteful number, since it uses less digits than its factorization.

634822228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9335642 (or 9335640 counting only the distinct ones).

The product of its digits is 73728, while the sum is 37.

The square root of 634822228 is about 25195.6787564852. The cubic root of 634822228 is about 859.4435863594.

The spelling of 634822228 in words is "six hundred thirty-four million, eight hundred twenty-two thousand, two hundred twenty-eight".