628433922 has 64 divisors (see below), whose sum is σ = 1373552640. Its totient is φ = 191083200.

The previous prime is 628433921. The next prime is 628433969. The reversal of 628433922 is 229334826.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (628433921) 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 31 ways as a sum of consecutive naturals, for example, 302704 + ... + 304772.

It is an arithmetic number, because the mean of its divisors is an integer number (21461760).

Almost surely, 2^628433922 is an apocalyptic number.

628433922 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

628433922 is an abundant number, since it is smaller than the sum of its proper divisors (745118718).

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

628433922 is a wasteful number, since it uses less digits than its factorization.

628433922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199.

The product of its digits is 124416, while the sum is 39.

The square root of 628433922 is about 25068.5843637011. The cubic root of 628433922 is about 856.5509607355.

The spelling of 628433922 in words is "six hundred twenty-eight million, four hundred thirty-three thousand, nine hundred twenty-two".