630142028 has 6 divisors (see below), whose sum is σ = 1102748556. Its totient is φ = 315071012.

The previous prime is 630142013. The next prime is 630142039. The reversal of 630142028 is 820241036.

It is a junction number, because it is equal to n+sod(n) for n = 630141988 and 630142006.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78767750 + ... + 78767757.

It is an arithmetic number, because the mean of its divisors is an integer number (183791426).

Almost surely, 2^630142028 is an apocalyptic number.

It is an amenable number.

630142028 is a deficient number, since it is larger than the sum of its proper divisors (472606528).

630142028 is a wasteful number, since it uses less digits than its factorization.

630142028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157535511 (or 157535509 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 630142028 is about 25102.6299020640. The cubic root of 630142028 is about 857.3263041271.

The spelling of 630142028 in words is "six hundred thirty million, one hundred forty-two thousand, twenty-eight".