228001930 has 32 divisors (see below), whose sum is σ = 442641024. Its totient is φ = 84058176.

The previous prime is 228001903. The next prime is 228001981. The reversal of 228001930 is 39100822.

It is a junction number, because it is equal to n+sod(n) for n = 228001895 and 228001904.

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, 166107 + ... + 167473.

It is an arithmetic number, because the mean of its divisors is an integer number (13832532).

Almost surely, 2^228001930 is an apocalyptic number.

228001930 is a deficient number, since it is larger than the sum of its proper divisors (214639094).

228001930 is a wasteful number, since it uses less digits than its factorization.

228001930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 228001930 is about 15099.7327790925. The cubic root of 228001930 is about 610.9131981948.

The spelling of 228001930 in words is "two hundred twenty-eight million, one thousand, nine hundred thirty".