628178748 has 48 divisors (see below), whose sum is σ = 1526644224. Its totient is φ = 200854080.

The previous prime is 628178729. The next prime is 628178767. The reversal of 628178748 is 847871826.

It is an interprime number because it is at equal distance from previous prime (628178729) and next prime (628178767).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 628178748.

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 15 ways as a sum of consecutive naturals, for example, 21561 + ... + 41487.

It is an arithmetic number, because the mean of its divisors is an integer number (31805088).

Almost surely, 2^628178748 is an apocalyptic number.

It is an amenable number.

628178748 is an abundant number, since it is smaller than the sum of its proper divisors (898465476).

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

628178748 is a wasteful number, since it uses less digits than its factorization.

628178748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20042 (or 20040 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 628178748 is about 25063.4943294027. The cubic root of 628178748 is about 856.4350115922.

The spelling of 628178748 in words is "six hundred twenty-eight million, one hundred seventy-eight thousand, seven hundred forty-eight".