228307500 has 180 divisors, whose sum is σ = 736295560. Its totient is φ = 59616000.

The previous prime is 228307487. The next prime is 228307523. The reversal of 228307500 is 5703822.

It is a tau number, because it is divible by the number of its divisors (180).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1642431 + ... + 1642569.

Almost surely, 2^228307500 is an apocalyptic number.

228307500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228307500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368147780).

228307500 is an abundant number, since it is smaller than the sum of its proper divisors (507988060).

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

228307500 is a wasteful number, since it uses less digits than its factorization.

228307500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 228307500 is about 15109.8477821585. The cubic root of 228307500 is about 611.1859932727.

The spelling of 228307500 in words is "two hundred twenty-eight million, three hundred seven thousand, five hundred".