628673890 has 64 divisors (see below), whose sum is σ = 1273708800. Its totient is φ = 221808384.

The previous prime is 628673879. The next prime is 628673891. The reversal of 628673890 is 98376826.

628673890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (628673891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387501 + ... + 389119.

It is an arithmetic number, because the mean of its divisors is an integer number (19901700).

Almost surely, 2^628673890 is an apocalyptic number.

628673890 is an abundant number, since it is smaller than the sum of its proper divisors (645034910).

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

628673890 is a wasteful number, since it uses less digits than its factorization.

628673890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 628673890 is about 25073.3701364615. The cubic root of 628673890 is about 856.6599717531.

The spelling of 628673890 in words is "six hundred twenty-eight million, six hundred seventy-three thousand, eight hundred ninety".