628230052 has 6 divisors (see below), whose sum is σ = 1099402598. Its totient is φ = 314115024.

The previous prime is 628230013. The next prime is 628230061. The reversal of 628230052 is 250032826.

It can be written as a sum of positive squares in only one way, i.e., 349540416 + 278689636 = 18696^2 + 16694^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 628230052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78528753 + ... + 78528760.

Almost surely, 2^628230052 is an apocalyptic number.

It is an amenable number.

628230052 is a deficient number, since it is larger than the sum of its proper divisors (471172546).

628230052 is a wasteful number, since it uses less digits than its factorization.

628230052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157057517 (or 157057515 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 628230052 is about 25064.5177890978. The cubic root of 628230052 is about 856.4583262649.

Adding to 628230052 its reverse (250032826), we get a palindrome (878262878).

The spelling of 628230052 in words is "six hundred twenty-eight million, two hundred thirty thousand, fifty-two".