630287238 has 16 divisors (see below), whose sum is σ = 1440656640. Its totient is φ = 180082056.

The previous prime is 630287227. The next prime is 630287261. The reversal of 630287238 is 832782036.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 630287196 and 630287205.

It is a congruent number.

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, 7503378 + ... + 7503461.

It is an arithmetic number, because the mean of its divisors is an integer number (90041040).

Almost surely, 2^630287238 is an apocalyptic number.

630287238 is an abundant number, since it is smaller than the sum of its proper divisors (810369402).

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

630287238 is a wasteful number, since it uses less digits than its factorization.

630287238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006851.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 630287238 is about 25105.5220618891. The cubic root of 630287238 is about 857.3921531927.

The spelling of 630287238 in words is "six hundred thirty million, two hundred eighty-seven thousand, two hundred thirty-eight".