628659232 has 48 divisors (see below), whose sum is σ = 1334642400. Its totient is φ = 290511360.

The previous prime is 628659223. The next prime is 628659233. The reversal of 628659232 is 232956826.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (628659233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12319 + ... + 37537.

It is an arithmetic number, because the mean of its divisors is an integer number (27805050).

Almost surely, 2^628659232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628659232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667321200).

628659232 is an abundant number, since it is smaller than the sum of its proper divisors (705983168).

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

628659232 is a wasteful number, since it uses less digits than its factorization.

628659232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25289 (or 25281 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 628659232 is about 25073.0778326076. The cubic root of 628659232 is about 856.6533138129.

The spelling of 628659232 in words is "six hundred twenty-eight million, six hundred fifty-nine thousand, two hundred thirty-two".