228745918 has 8 divisors (see below), whose sum is σ = 343208448. Its totient is φ = 114343104.

The previous prime is 228745903. The next prime is 228745943. The reversal of 228745918 is 819547822.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3646 + ... + 21697.

It is an arithmetic number, because the mean of its divisors is an integer number (42901056).

Almost surely, 2^228745918 is an apocalyptic number.

228745918 is a deficient number, since it is larger than the sum of its proper divisors (114462530).

228745918 is a wasteful number, since it uses less digits than its factorization.

228745918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29858.

The product of its digits is 322560, while the sum is 46.

The square root of 228745918 is about 15124.3485148948. The cubic root of 228745918 is about 611.5769624786.

It can be divided in two parts, 2287 and 45918, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 228745918 in words is "two hundred twenty-eight million, seven hundred forty-five thousand, nine hundred eighteen".