628228848 has 80 divisors (see below), whose sum is σ = 1760581760. Its totient is φ = 191884032.

The previous prime is 628228847. The next prime is 628228859. The reversal of 628228848 is 848822826.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 628228797 and 628228806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628228847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83115 + ... + 90357.

It is an arithmetic number, because the mean of its divisors is an integer number (22007272).

Almost surely, 2^628228848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628228848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880290880).

628228848 is an abundant number, since it is smaller than the sum of its proper divisors (1132352912).

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

628228848 is a wasteful number, since it uses less digits than its factorization.

628228848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406 (or 7400 counting only the distinct ones).

The product of its digits is 786432, while the sum is 48.

The square root of 628228848 is about 25064.4937710699. The cubic root of 628228848 is about 856.4577791317.

The spelling of 628228848 in words is "six hundred twenty-eight million, two hundred twenty-eight thousand, eight hundred forty-eight".