517228890 has 32 divisors (see below), whose sum is σ = 1267764480. Its totient is φ = 134992704.

The previous prime is 517228813. The next prime is 517228903. The reversal of 517228890 is 98822715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182005 + ... + 184824.

It is an arithmetic number, because the mean of its divisors is an integer number (39617640).

Almost surely, 2^517228890 is an apocalyptic number.

517228890 is an abundant number, since it is smaller than the sum of its proper divisors (750535590).

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

517228890 is a wasteful number, since it uses less digits than its factorization.

517228890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366886.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 517228890 is about 22742.6667301792. Note that the first 3 decimals coincide. The cubic root of 517228890 is about 802.7141614541.

The spelling of 517228890 in words is "five hundred seventeen million, two hundred twenty-eight thousand, eight hundred ninety".