628437123 has 12 divisors (see below), whose sum is σ = 941362968. Its totient is φ = 418957920.

The previous prime is 628437109. The next prime is 628437127. The reversal of 628437123 is 321734826.

It is a happy number.

628437123 is a `hidden beast` number, since 6 + 284 + 371 + 2 + 3 = 666.

It is not a de Polignac number, because 628437123 - 2¹⁴ = 628420739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628437127) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 1292838 + ... + 1293323.

It is an arithmetic number, because the mean of its divisors is an integer number (78446914).

Almost surely, 2^628437123 is an apocalyptic number.

628437123 is a deficient number, since it is larger than the sum of its proper divisors (312925845).

628437123 is an equidigital number, since it uses as much as digits as its factorization.

628437123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586176 (or 2586164 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 628437123 is about 25068.6482084695. The cubic root of 628437123 is about 856.5524150464.

The spelling of 628437123 in words is "six hundred twenty-eight million, four hundred thirty-seven thousand, one hundred twenty-three".