228125000 has 72 divisors (see below), whose sum is σ = 541991910. Its totient is φ = 90000000.

The previous prime is 228124997. The next prime is 228125021. The reversal of 228125000 is 521822.

It can be written as a sum of positive squares in 9 ways, for example, as 223622116 + 4502884 = 14954^2 + 2122^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3124964 + ... + 3125036.

Almost surely, 2^228125000 is an apocalyptic number.

228125000 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 228125000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270995955).

228125000 is an abundant number, since it is smaller than the sum of its proper divisors (313866910).

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

228125000 is an frugal number, since it uses more digits than its factorization.

228125000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 80 counting only the distinct ones).

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

The square root of 228125000 is about 15103.8074669932. The cubic root of 228125000 is about 611.0230972114.

Adding to 228125000 its reverse (521822), we get a palindrome (228646822).

It can be divided in two parts, 2 and 28125000, that multiplied together give a square (56250000 = 7500²).

The spelling of 228125000 in words is "two hundred twenty-eight million, one hundred twenty-five thousand".