228338490 has 16 divisors (see below), whose sum is σ = 548012448. Its totient is φ = 60890256.

The previous prime is 228338483. The next prime is 228338491. The reversal of 228338490 is 94833822.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228338491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3805612 + ... + 3805671.

It is an arithmetic number, because the mean of its divisors is an integer number (34250778).

Almost surely, 2^228338490 is an apocalyptic number.

228338490 is an abundant number, since it is smaller than the sum of its proper divisors (319673958).

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

228338490 is a wasteful number, since it uses less digits than its factorization.

228338490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611293.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 228338490 is about 15110.8732375068. The cubic root of 228338490 is about 611.2136457400.

The spelling of 228338490 in words is "two hundred twenty-eight million, three hundred thirty-eight thousand, four hundred ninety".