228489481 has 8 divisors (see below), whose sum is σ = 249397344. Its totient is φ = 207604320.

The previous prime is 228489473. The next prime is 228489491. The reversal of 228489481 is 184984822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228489481 - 2³ = 228489473 is a prime.

It is a super-2 number, since 2×228489481² = 104414885855298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228489461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20746 + ... + 29788.

It is an arithmetic number, because the mean of its divisors is an integer number (31174668).

Almost surely, 2^228489481 is an apocalyptic number.

It is an amenable number.

228489481 is a deficient number, since it is larger than the sum of its proper divisors (20907863).

228489481 is a wasteful number, since it uses less digits than its factorization.

228489481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its digits is 294912, while the sum is 46.

The square root of 228489481 is about 15115.8685162315. The cubic root of 228489481 is about 611.3483396689.

The spelling of 228489481 in words is "two hundred twenty-eight million, four hundred eighty-nine thousand, four hundred eighty-one".