228651280 has 240 divisors, whose sum is σ = 664957440. Its totient is φ = 72483840.

The previous prime is 228651271. The next prime is 228651289. The reversal of 228651280 is 82156822.

It is an interprime number because it is at equal distance from previous prime (228651271) and next prime (228651289).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228651289) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2894281 + ... + 2894359.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^228651280 is an apocalyptic number.

228651280 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 228651280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332478720).

228651280 is an abundant number, since it is smaller than the sum of its proper divisors (436306160).

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

228651280 is a wasteful number, since it uses less digits than its factorization.

228651280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 228651280 is about 15121.2195275381. The cubic root of 228651280 is about 611.4926092002.

The spelling of 228651280 in words is "two hundred twenty-eight million, six hundred fifty-one thousand, two hundred eighty".