628424626 has 8 divisors (see below), whose sum is σ = 951970284. Its totient is φ = 311101200.

The previous prime is 628424603. The next prime is 628424627. The reversal of 628424626 is 626424826.

It can be written as a sum of positive squares in 2 ways, for example, as 425390625 + 203034001 = 20625^2 + 14249^2 .

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

It is not an unprimeable number, because it can be changed into a prime (628424627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555305 + ... + 1555708.

Almost surely, 2^628424626 is an apocalyptic number.

628424626 is a deficient number, since it is larger than the sum of its proper divisors (323545658).

628424626 is a wasteful number, since it uses less digits than its factorization.

628424626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111116.

The product of its digits is 221184, while the sum is 40.

The square root of 628424626 is about 25068.3989516682. The cubic root of 628424626 is about 856.5467372541.

It can be divided in two parts, 62842 and 4626, that multiplied together give a palindrome (290707092).

The spelling of 628424626 in words is "six hundred twenty-eight million, four hundred twenty-four thousand, six hundred twenty-six".