634013028 has 96 divisors (see below), whose sum is σ = 1898709120. Its totient is φ = 180817920.

The previous prime is 634013021. The next prime is 634013087. The reversal of 634013028 is 820310436.

It is a happy number.

634013028 is a `hidden beast` number, since 634 + 0 + 1 + 3 + 0 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 634012992 and 634013010.

It is not an unprimeable number, because it can be changed into a prime (634013021) 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, 4500 + ... + 35892.

It is an arithmetic number, because the mean of its divisors is an integer number (19778220).

Almost surely, 2^634013028 is an apocalyptic number.

634013028 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634013028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949354560).

634013028 is an abundant number, since it is smaller than the sum of its proper divisors (1264696092).

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

634013028 is a wasteful number, since it uses less digits than its factorization.

634013028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31434 (or 31426 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 634013028 is about 25179.6153266884. The cubic root of 634013028 is about 859.0782570711.

The spelling of 634013028 in words is "six hundred thirty-four million, thirteen thousand, twenty-eight".