228306515 has 8 divisors (see below), whose sum is σ = 290083680. Its totient is φ = 171901312.

The previous prime is 228306511. The next prime is 228306521. The reversal of 228306515 is 515603822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228306515 - 2² = 228306511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228306511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342895 + ... + 1343064.

It is an arithmetic number, because the mean of its divisors is an integer number (36260460).

Almost surely, 2^228306515 is an apocalyptic number.

228306515 is a deficient number, since it is larger than the sum of its proper divisors (61777165).

228306515 is a wasteful number, since it uses less digits than its factorization.

228306515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685981.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 228306515 is about 15109.8151874866. The cubic root of 228306515 is about 611.1851143133.

The spelling of 228306515 in words is "two hundred twenty-eight million, three hundred six thousand, five hundred fifteen".