628946346 has 16 divisors (see below), whose sum is σ = 1437591744. Its totient is φ = 179698944.

The previous prime is 628946317. The next prime is 628946369. The reversal of 628946346 is 643649826.

It is a super-2 number, since 2×628946346² = 791147012293503432, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 628946295 and 628946304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487415 + ... + 7487498.

It is an arithmetic number, because the mean of its divisors is an integer number (89849484).

Almost surely, 2^628946346 is an apocalyptic number.

628946346 is an abundant number, since it is smaller than the sum of its proper divisors (808645398).

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

628946346 is a wasteful number, since it uses less digits than its factorization.

628946346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14974925.

The product of its digits is 1492992, while the sum is 48.

The square root of 628946346 is about 25078.8027226182. The cubic root of 628946346 is about 856.7837075742.

The spelling of 628946346 in words is "six hundred twenty-eight million, nine hundred forty-six thousand, three hundred forty-six".