228142515 has 16 divisors (see below), whose sum is σ = 369427968. Its totient is φ = 120209376.

The previous prime is 228142493. The next prime is 228142517. The reversal of 228142515 is 515241822.

It is not a de Polignac number, because 228142515 - 2⁹ = 228142003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228142517) 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, 90379 + ... + 92868.

It is an arithmetic number, because the mean of its divisors is an integer number (23089248).

Almost surely, 2^228142515 is an apocalyptic number.

228142515 is a deficient number, since it is larger than the sum of its proper divisors (141285453).

228142515 is a wasteful number, since it uses less digits than its factorization.

228142515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183338.

The product of its digits is 6400, while the sum is 30.

The square root of 228142515 is about 15104.3872765498. The cubic root of 228142515 is about 611.0387345383.

The spelling of 228142515 in words is "two hundred twenty-eight million, one hundred forty-two thousand, five hundred fifteen".