628650550 has 48 divisors (see below), whose sum is σ = 1316772864. Its totient is φ = 221220000.

The previous prime is 628650493. The next prime is 628650553. The reversal of 628650550 is 55056826.

628650550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628650553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1386 + ... + 35485.

It is an arithmetic number, because the mean of its divisors is an integer number (27432768).

Almost surely, 2^628650550 is an apocalyptic number.

628650550 is an abundant number, since it is smaller than the sum of its proper divisors (688122314).

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

628650550 is a wasteful number, since it uses less digits than its factorization.

628650550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925 (or 36920 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 628650550 is about 25072.9046980999. The cubic root of 628650550 is about 856.6493702359.

The spelling of 628650550 in words is "six hundred twenty-eight million, six hundred fifty thousand, five hundred fifty".