628314237 has 36 divisors (see below), whose sum is σ = 984261564. Its totient is φ = 384894720.

The previous prime is 628314227. The next prime is 628314241. The reversal of 628314237 is 732413826.

It is a happy number.

628314237 is a `hidden beast` number, since 628 + 3 + 1 + 4 + 23 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 458559396 + 169754841 = 21414^2 + 13029^2 .

It is not a de Polignac number, because 628314237 - 2⁷ = 628314109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628314227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 281787 + ... + 284007.

It is an arithmetic number, because the mean of its divisors is an integer number (27340599).

Almost surely, 2^628314237 is an apocalyptic number.

It is an amenable number.

628314237 is a deficient number, since it is larger than the sum of its proper divisors (355947327).

628314237 is a wasteful number, since it uses less digits than its factorization.

628314237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2284 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 628314237 is about 25066.1970988820. The cubic root of 628314237 is about 856.4965806822.

The spelling of 628314237 in words is "six hundred twenty-eight million, three hundred fourteen thousand, two hundred thirty-seven".