228307418 has 8 divisors (see below), whose sum is σ = 342969012. Its totient is φ = 113984416.

The previous prime is 228307381. The next prime is 228307421. The reversal of 228307418 is 814703822.

It can be written as a sum of positive squares in 2 ways, for example, as 207849889 + 20457529 = 14417^2 + 4523^2 .

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

It is a super-2 number, since 2×228307418² = 104248554227653448, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 82955 + ... + 85662.

Almost surely, 2^228307418 is an apocalyptic number.

228307418 is a deficient number, since it is larger than the sum of its proper divisors (114661594).

228307418 is a wasteful number, since it uses less digits than its factorization.

228307418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169296.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 228307418 is about 15109.8450686961. The cubic root of 228307418 is about 611.1859201006.

The spelling of 228307418 in words is "two hundred twenty-eight million, three hundred seven thousand, four hundred eighteen".