628788234 has 8 divisors (see below), whose sum is σ = 1257576480. Its totient is φ = 209596076.

The previous prime is 628788227. The next prime is 628788253. The reversal of 628788234 is 432887826.

It is a happy number.

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

628788234 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52399014 + ... + 52399025.

It is an arithmetic number, because the mean of its divisors is an integer number (157197060).

Almost surely, 2^628788234 is an apocalyptic number.

628788234 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.

628788234 is a wasteful number, since it uses less digits than its factorization.

628788234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104798044.

The product of its digits is 1032192, while the sum is 48.

The square root of 628788234 is about 25075.6502208816. The cubic root of 628788234 is about 856.7119054034.

The spelling of 628788234 in words is "six hundred twenty-eight million, seven hundred eighty-eight thousand, two hundred thirty-four".