228875540 has 48 divisors (see below), whose sum is σ = 500305680. Its totient is φ = 87843840.

The previous prime is 228875527. The next prime is 228875567. The reversal of 228875540 is 45578822.

It can be written as a sum of positive squares in 8 ways, for example, as 12138256 + 216737284 = 3484^2 + 14722^2 .

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 99200 + ... + 101480.

It is an arithmetic number, because the mean of its divisors is an integer number (10423035).

Almost surely, 2^228875540 is an apocalyptic number.

228875540 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 228875540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250152840).

228875540 is an abundant number, since it is smaller than the sum of its proper divisors (271430140).

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

228875540 is a wasteful number, since it uses less digits than its factorization.

228875540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 228875540 is about 15128.6331173705. The cubic root of 228875540 is about 611.6924601460.

The spelling of 228875540 in words is "two hundred twenty-eight million, eight hundred seventy-five thousand, five hundred forty".