228814578 has 48 divisors (see below), whose sum is σ = 515820960. Its totient is φ = 75179016.

The previous prime is 228814559. The next prime is 228814609. The reversal of 228814578 is 875418822.

It is a happy number.

It is a super-2 number, since 2×228814578² = 104712222210636168, which contains 22 as substring.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 1149723 + ... + 1149921.

It is an arithmetic number, because the mean of its divisors is an integer number (10746270).

Almost surely, 2^228814578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228814578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257910480).

228814578 is an abundant number, since it is smaller than the sum of its proper divisors (287006382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228814578 is a wasteful number, since it uses less digits than its factorization.

228814578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 311 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 228814578 is about 15126.6181944280. The cubic root of 228814578 is about 611.6381463371.

The spelling of 228814578 in words is "two hundred twenty-eight million, eight hundred fourteen thousand, five hundred seventy-eight".