228135815 has 16 divisors (see below), whose sum is σ = 277128192. Its totient is φ = 180278784.

The previous prime is 228135799. The next prime is 228135823. The reversal of 228135815 is 518531822.

228135815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 228135815 - 2⁴ = 228135799 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 175247 + ... + 176543.

It is an arithmetic number, because the mean of its divisors is an integer number (17320512).

Almost surely, 2^228135815 is an apocalyptic number.

228135815 is a deficient number, since it is larger than the sum of its proper divisors (48992377).

228135815 is a wasteful number, since it uses less digits than its factorization.

228135815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706.

The product of its digits is 19200, while the sum is 35.

The square root of 228135815 is about 15104.1654850574. The cubic root of 228135815 is about 611.0327528977.

The spelling of 228135815 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, eight hundred fifteen".