628906298 has 8 divisors (see below), whose sum is σ = 966368340. Its totient is φ = 306783520.

The previous prime is 628906277. The next prime is 628906301. The reversal of 628906298 is 892609826.

It can be written as a sum of positive squares in 2 ways, for example, as 425473129 + 203433169 = 20627^2 + 14263^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834713 + ... + 3834876.

Almost surely, 2^628906298 is an apocalyptic number.

628906298 is a deficient number, since it is larger than the sum of its proper divisors (337462042).

628906298 is a wasteful number, since it uses less digits than its factorization.

628906298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669632.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 628906298 is about 25078.0042666876. The cubic root of 628906298 is about 856.7655220260.

The spelling of 628906298 in words is "six hundred twenty-eight million, nine hundred six thousand, two hundred ninety-eight".