228821250 has 160 divisors (see below), whose sum is σ = 683781120. Its totient is φ = 49896000.

The previous prime is 228821233. The next prime is 228821267. The reversal of 228821250 is 52128822.

It is an interprime number because it is at equal distance from previous prime (228821233) and next prime (228821267).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 603561 + ... + 603939.

It is an arithmetic number, because the mean of its divisors is an integer number (4273632).

Almost surely, 2^228821250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228821250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341890560).

228821250 is an abundant number, since it is smaller than the sum of its proper divisors (454959870).

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

228821250 is a wasteful number, since it uses less digits than its factorization.

228821250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 228821250 is about 15126.8387312088. The cubic root of 228821250 is about 611.6440911944.

The spelling of 228821250 in words is "two hundred twenty-eight million, eight hundred twenty-one thousand, two hundred fifty".