628459326 has 24 divisors (see below), whose sum is σ = 1485449784. Its totient is φ = 190442160.

The previous prime is 628459303. The next prime is 628459361. The reversal of 628459326 is 623954826.

It is a super-2 number, since 2×628459326² = 789922248872748552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1586821 + ... + 1587216.

It is an arithmetic number, because the mean of its divisors is an integer number (61893741).

Almost surely, 2^628459326 is an apocalyptic number.

628459326 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

628459326 is an abundant number, since it is smaller than the sum of its proper divisors (856990458).

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

628459326 is a wasteful number, since it uses less digits than its factorization.

628459326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174056 (or 3174053 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 628459326 is about 25069.0910485402. The cubic root of 628459326 is about 856.5625024037.

It can be divided in two parts, 628 and 459326, that added together give a palindrome (459954).

The spelling of 628459326 in words is "six hundred twenty-eight million, four hundred fifty-nine thousand, three hundred twenty-six".