628868414 has 16 divisors (see below), whose sum is σ = 967329216. Its totient is φ = 306441600.

The previous prime is 628868411. The next prime is 628868419. The reversal of 628868414 is 414868826.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628868411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86459 + ... + 93449.

It is an arithmetic number, because the mean of its divisors is an integer number (60458076).

Almost surely, 2^628868414 is an apocalyptic number.

628868414 is a deficient number, since it is larger than the sum of its proper divisors (338460802).

628868414 is a wasteful number, since it uses less digits than its factorization.

628868414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131.

The product of its digits is 589824, while the sum is 47.

The square root of 628868414 is about 25077.2489320499. The cubic root of 628868414 is about 856.7483184262.

The spelling of 628868414 in words is "six hundred twenty-eight million, eight hundred sixty-eight thousand, four hundred fourteen".