228015515 has 16 divisors (see below), whose sum is σ = 336762048. Its totient is φ = 144326016.

The previous prime is 228015481. The next prime is 228015517. The reversal of 228015515 is 515510822.

It is a cyclic number.

It is not a de Polignac number, because 228015515 - 2⁶ = 228015451 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (228015517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250112 + ... + 251021.

It is an arithmetic number, because the mean of its divisors is an integer number (21047628).

Almost surely, 2^228015515 is an apocalyptic number.

228015515 is a deficient number, since it is larger than the sum of its proper divisors (108746533).

228015515 is a wasteful number, since it uses less digits than its factorization.

228015515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501158.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 228015515 is about 15100.1826147898. The cubic root of 228015515 is about 610.9253312660.

The spelling of 228015515 in words is "two hundred twenty-eight million, fifteen thousand, five hundred fifteen".