628468239 has 32 divisors (see below), whose sum is σ = 990572544. Its totient is φ = 346832640.

The previous prime is 628468237. The next prime is 628468279. The reversal of 628468239 is 932864826.

It is not a de Polignac number, because 628468239 - 2¹ = 628468237 is a prime.

It is a super-2 number, since 2×628468239² = 789944654863522242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628468237) 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, 619897 + ... + 620909.

It is an arithmetic number, because the mean of its divisors is an integer number (30955392).

Almost surely, 2^628468239 is an apocalyptic number.

628468239 is a deficient number, since it is larger than the sum of its proper divisors (362104305).

628468239 is a wasteful number, since it uses less digits than its factorization.

628468239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its digits is 995328, while the sum is 48.

The square root of 628468239 is about 25069.2688166209. The cubic root of 628468239 is about 856.5665517273.

The spelling of 628468239 in words is "six hundred twenty-eight million, four hundred sixty-eight thousand, two hundred thirty-nine".