228368990 has 32 divisors (see below), whose sum is σ = 436938624. Its totient is φ = 85639680.

The previous prime is 228368989. The next prime is 228369023. The reversal of 228368990 is 99863822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43592 + ... + 48548.

It is an arithmetic number, because the mean of its divisors is an integer number (13654332).

Almost surely, 2^228368990 is an apocalyptic number.

228368990 is a deficient number, since it is larger than the sum of its proper divisors (208569634).

228368990 is a wasteful number, since it uses less digits than its factorization.

228368990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 228368990 is about 15111.8824108713. The cubic root of 228368990 is about 611.2408585360.

The spelling of 228368990 in words is "two hundred twenty-eight million, three hundred sixty-eight thousand, nine hundred ninety".