228102500 has 60 divisors (see below), whose sum is σ = 520633344. Its totient is φ = 87252000.

The previous prime is 228102499. The next prime is 228102503. The reversal of 228102500 is 5201822.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (228102503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55517 + ... + 59483.

Almost surely, 2^228102500 is an apocalyptic number.

228102500 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 228102500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260316672).

228102500 is an abundant number, since it is smaller than the sum of its proper divisors (292530844).

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

228102500 is a wasteful number, since it uses less digits than its factorization.

228102500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014 (or 3997 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 228102500 is about 15103.0626033265. The cubic root of 228102500 is about 611.0030081203.

The spelling of 228102500 in words is "two hundred twenty-eight million, one hundred two thousand, five hundred".