509994628 has 96 divisors (see below), whose sum is σ = 1120210560. Its totient is φ = 199587840.

The previous prime is 509994581. The next prime is 509994631. The reversal of 509994628 is 826499905.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1740450 + ... + 1740742.

It is an arithmetic number, because the mean of its divisors is an integer number (11668860).

Almost surely, 2^509994628 is an apocalyptic number.

It is an amenable number.

509994628 is an abundant number, since it is smaller than the sum of its proper divisors (610215932).

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

509994628 is a wasteful number, since it uses less digits than its factorization.

509994628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 509994628 is about 22583.0606428801. The cubic root of 509994628 is about 798.9541688088.

The spelling of 509994628 in words is "five hundred nine million, nine hundred ninety-four thousand, six hundred twenty-eight".