228510505 has 16 divisors (see below), whose sum is σ = 277992000. Its totient is φ = 180306880.

The previous prime is 228510493. The next prime is 228510533. The reversal of 228510505 is 505015822.

It is not a de Polignac number, because 228510505 - 2⁹ = 228509993 is a prime.

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, 116271 + ... + 118219.

It is an arithmetic number, because the mean of its divisors is an integer number (17374500).

Almost surely, 2^228510505 is an apocalyptic number.

It is an amenable number.

228510505 is a deficient number, since it is larger than the sum of its proper divisors (49481495).

228510505 is a wasteful number, since it uses less digits than its factorization.

228510505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 228510505 is about 15116.5639283536. The cubic root of 228510505 is about 611.3670897564.

The spelling of 228510505 in words is "two hundred twenty-eight million, five hundred ten thousand, five hundred five".