228628015 has 16 divisors (see below), whose sum is σ = 342051840. Its totient is φ = 142521120.

The previous prime is 228628003. The next prime is 228628021. The reversal of 228628015 is 510826822.

228628015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228628015 - 2⁵ = 228627983 is a prime.

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, 296535 + ... + 297304.

It is an arithmetic number, because the mean of its divisors is an integer number (21378240).

Almost surely, 2^228628015 is an apocalyptic number.

228628015 is a deficient number, since it is larger than the sum of its proper divisors (113423825).

228628015 is a wasteful number, since it uses less digits than its factorization.

228628015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593862.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 228628015 is about 15120.4502247784. The cubic root of 228628015 is about 611.4718689444.

The spelling of 228628015 in words is "two hundred twenty-eight million, six hundred twenty-eight thousand, fifteen".