628205700 has 108 divisors (see below), whose sum is σ = 1878994320. Its totient is φ = 162043200.

The previous prime is 628205689. The next prime is 628205701. The reversal of 628205700 is 7502826.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (628205701) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 287211 + ... + 289389.

Almost surely, 2^628205700 is an apocalyptic number.

628205700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628205700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939497160).

628205700 is an abundant number, since it is smaller than the sum of its proper divisors (1250788620).

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

628205700 is a wasteful number, since it uses less digits than its factorization.

628205700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 628205700 is about 25064.0319980645. The cubic root of 628205700 is about 856.4472598609.

The spelling of 628205700 in words is "six hundred twenty-eight million, two hundred five thousand, seven hundred".