628309023 has 16 divisors (see below), whose sum is σ = 866052096. Its totient is φ = 404759520.

The previous prime is 628309013. The next prime is 628309067. The reversal of 628309023 is 320903826.

It is not a de Polignac number, because 628309023 - 2⁸ = 628308767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628309013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62965 + ... + 72257.

It is an arithmetic number, because the mean of its divisors is an integer number (54128256).

Almost surely, 2^628309023 is an apocalyptic number.

628309023 is a deficient number, since it is larger than the sum of its proper divisors (237743073).

628309023 is a wasteful number, since it uses less digits than its factorization.

628309023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 628309023 is about 25066.0930940584. The cubic root of 628309023 is about 856.4942114932.

The spelling of 628309023 in words is "six hundred twenty-eight million, three hundred nine thousand, twenty-three".