628841550 has 24 divisors (see below), whose sum is σ = 1559527416. Its totient is φ = 167691040.

The previous prime is 628841519. The next prime is 628841573. The reversal of 628841550 is 55148826.

It is a junction number, because it is equal to n+sod(n) for n = 628841499 and 628841508.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2095989 + ... + 2096288.

It is an arithmetic number, because the mean of its divisors is an integer number (64980309).

Almost surely, 2^628841550 is an apocalyptic number.

628841550 is an abundant number, since it is smaller than the sum of its proper divisors (930685866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628841550 is a wasteful number, since it uses less digits than its factorization.

628841550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192292 (or 4192287 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 628841550 is about 25076.7133013878. The cubic root of 628841550 is about 856.7361187281.

The spelling of 628841550 in words is "six hundred twenty-eight million, eight hundred forty-one thousand, five hundred fifty".