628608426 has 32 divisors (see below), whose sum is σ = 1324515840. Its totient is φ = 198338544.

The previous prime is 628608413. The next prime is 628608427. The reversal of 628608426 is 624806826.

It is not an unprimeable number, because it can be changed into a prime (628608427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249891 + ... + 252393.

It is an arithmetic number, because the mean of its divisors is an integer number (41391120).

Almost surely, 2^628608426 is an apocalyptic number.

628608426 is an abundant number, since it is smaller than the sum of its proper divisors (695907414).

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

628608426 is a wasteful number, since it uses less digits than its factorization.

628608426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 628608426 is about 25072.0646537137. The cubic root of 628608426 is about 856.6302359680.

The spelling of 628608426 in words is "six hundred twenty-eight million, six hundred eight thousand, four hundred twenty-six".