628260620 has 48 divisors (see below), whose sum is σ = 1429978368. Its totient is φ = 230480640.

The previous prime is 628260559. The next prime is 628260623. The reversal of 628260620 is 26062826.

It is a super-2 number, since 2×628260620² = 789422813285568800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628260623) 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, 33125 + ... + 48515.

It is an arithmetic number, because the mean of its divisors is an integer number (29791216).

Almost surely, 2^628260620 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 628260620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714989184).

628260620 is an abundant number, since it is smaller than the sum of its proper divisors (801717748).

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

628260620 is a wasteful number, since it uses less digits than its factorization.

628260620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570 (or 15568 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 628260620 is about 25065.1275679977. The cubic root of 628260620 is about 856.4722170328.

The spelling of 628260620 in words is "six hundred twenty-eight million, two hundred sixty thousand, six hundred twenty".