228936920 has 16 divisors (see below), whose sum is σ = 515108160. Its totient is φ = 91574752.

The previous prime is 228936913. The next prime is 228936937. The reversal of 228936920 is 29639822.

228936920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228936920² = 104824226678172800, which contains 22 as substring.

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, 2861672 + ... + 2861751.

It is an arithmetic number, because the mean of its divisors is an integer number (32194260).

Almost surely, 2^228936920 is an apocalyptic number.

228936920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228936920 is an abundant number, since it is smaller than the sum of its proper divisors (286171240).

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

228936920 is a wasteful number, since it uses less digits than its factorization.

228936920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723434 (or 5723430 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 228936920 is about 15130.6615850068. The cubic root of 228936920 is about 611.7471366271.

The spelling of 228936920 in words is "two hundred twenty-eight million, nine hundred thirty-six thousand, nine hundred twenty".