628085838 has 8 divisors (see below), whose sum is σ = 1256171688. Its totient is φ = 209361944.

The previous prime is 628085837. The next prime is 628085839. The reversal of 628085838 is 838580826.

It is an interprime number because it is at equal distance from previous prime (628085837) and next prime (628085839).

It is a sphenic number, since it is the product of 3 distinct primes.

628085838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628085833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52340481 + ... + 52340492.

It is an arithmetic number, because the mean of its divisors is an integer number (157021461).

Almost surely, 2^628085838 is an apocalyptic number.

628085838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

628085838 is a wasteful number, since it uses less digits than its factorization.

628085838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104680978.

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 628085838 is about 25061.6407683136. The cubic root of 628085838 is about 856.3927861903.

The spelling of 628085838 in words is "six hundred twenty-eight million, eighty-five thousand, eight hundred thirty-eight".