628178055 has 8 divisors (see below), whose sum is σ = 1005084912. Its totient is φ = 335028288.

The previous prime is 628178027. The next prime is 628178063. The reversal of 628178055 is 550871826.

628178055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 628178055 - 2¹³ = 628169863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628177998 and 628178016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20939254 + ... + 20939283.

It is an arithmetic number, because the mean of its divisors is an integer number (125635614).

Almost surely, 2^628178055 is an apocalyptic number.

628178055 is a deficient number, since it is larger than the sum of its proper divisors (376906857).

628178055 is a wasteful number, since it uses less digits than its factorization.

628178055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878545.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 628178055 is about 25063.4805045109. The cubic root of 628178055 is about 856.4346966554.

The spelling of 628178055 in words is "six hundred twenty-eight million, one hundred seventy-eight thousand, fifty-five".