500228505 has 72 divisors (see below), whose sum is σ = 1020357000. Its totient is φ = 226017792.

The previous prime is 500228497. The next prime is 500228537. The reversal of 500228505 is 505822005.

It can be written as a sum of positive squares in 4 ways, for example, as 79281216 + 420947289 = 8904^2 + 20517^2 .

It is not a de Polignac number, because 500228505 - 2³ = 500228497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 194971 + ... + 197519.

It is an arithmetic number, because the mean of its divisors is an integer number (14171625).

Almost surely, 2^500228505 is an apocalyptic number.

It is an amenable number.

500228505 is an abundant number, since it is smaller than the sum of its proper divisors (520128495).

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

500228505 is a wasteful number, since it uses less digits than its factorization.

500228505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 500228505 is about 22365.7887184870. The cubic root of 500228505 is about 793.8214172623.

The spelling of 500228505 in words is "five hundred million, two hundred twenty-eight thousand, five hundred five".