628453530 has 24 divisors (see below), whose sum is σ = 1633979412. Its totient is φ = 167587584.

The previous prime is 628453517. The next prime is 628453543. The reversal of 628453530 is 35354826.

It is a happy number.

628453530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (628453517) and next prime (628453543).

It can be written as a sum of positive squares in 2 ways, for example, as 583657281 + 44796249 = 24159^2 + 6693^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3491319 + ... + 3491498.

Almost surely, 2^628453530 is an apocalyptic number.

628453530 is an abundant number, since it is smaller than the sum of its proper divisors (1005525882).

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

628453530 is a wasteful number, since it uses less digits than its factorization.

628453530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982830 (or 6982827 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 628453530 is about 25068.9754477521. The cubic root of 628453530 is about 856.5598691643.

The spelling of 628453530 in words is "six hundred twenty-eight million, four hundred fifty-three thousand, five hundred thirty".