628040030 has 8 divisors (see below), whose sum is σ = 1130472072. Its totient is φ = 251216008.

The previous prime is 628040011. The next prime is 628040051. The reversal of 628040030 is 30040826.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 628039978 and 628040005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31401992 + ... + 31402011.

It is an arithmetic number, because the mean of its divisors is an integer number (141309009).

Almost surely, 2^628040030 is an apocalyptic number.

628040030 is a deficient number, since it is larger than the sum of its proper divisors (502432042).

628040030 is a wasteful number, since it uses less digits than its factorization.

628040030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62804010.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 628040030 is about 25060.7268450059. The cubic root of 628040030 is about 856.3719660029.

Adding to 628040030 its reverse (30040826), we get a palindrome (658080856).

The spelling of 628040030 in words is "six hundred twenty-eight million, forty thousand, thirty".