628343380 has 24 divisors (see below), whose sum is σ = 1508024448. Its totient is φ = 215431968.

The previous prime is 628343299. The next prime is 628343389. The reversal of 628343380 is 83343826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628343389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243944 + ... + 2244223.

It is an arithmetic number, because the mean of its divisors is an integer number (62834352).

Almost surely, 2^628343380 is an apocalyptic number.

It is an amenable number.

628343380 is an abundant number, since it is smaller than the sum of its proper divisors (879681068).

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

628343380 is a wasteful number, since it uses less digits than its factorization.

628343380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488183 (or 4488181 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 628343380 is about 25066.7784128715. The cubic root of 628343380 is about 856.5098227260.

The spelling of 628343380 in words is "six hundred twenty-eight million, three hundred forty-three thousand, three hundred eighty".