519640028 has 12 divisors (see below), whose sum is σ = 919588320. Its totient is φ = 256900512.

The previous prime is 519640021. The next prime is 519640087. The reversal of 519640028 is 820046915.

It is a self number, because there is not a number n which added to its sum of digits gives 519640028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519640021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729476 + ... + 730187.

It is an arithmetic number, because the mean of its divisors is an integer number (76632360).

Almost surely, 2^519640028 is an apocalyptic number.

It is an amenable number.

519640028 is a deficient number, since it is larger than the sum of its proper divisors (399948292).

519640028 is a wasteful number, since it uses less digits than its factorization.

519640028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459756 (or 1459754 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 519640028 is about 22795.6142273026. The cubic root of 519640028 is about 803.9595513590.

The spelling of 519640028 in words is "five hundred nineteen million, six hundred forty thousand, twenty-eight".