228485481 has 24 divisors (see below), whose sum is σ = 354968640. Its totient is φ = 130348512.

The previous prime is 228485479. The next prime is 228485483. The reversal of 228485481 is 184584822.

It is an interprime number because it is at equal distance from previous prime (228485479) and next prime (228485483).

It is not a de Polignac number, because 228485481 - 2¹ = 228485479 is a prime.

It is a super-2 number, since 2×228485481² = 104411230055602722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228485483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145780 + ... + 147338.

It is an arithmetic number, because the mean of its divisors is an integer number (14790360).

Almost surely, 2^228485481 is an apocalyptic number.

228485481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

228485481 is a deficient number, since it is larger than the sum of its proper divisors (126483159).

228485481 is a wasteful number, since it uses less digits than its factorization.

228485481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2566 counting only the distinct ones).

The product of its digits is 163840, while the sum is 42.

The square root of 228485481 is about 15115.7362043666. The cubic root of 228485481 is about 611.3447721704.

The spelling of 228485481 in words is "two hundred twenty-eight million, four hundred eighty-five thousand, four hundred eighty-one".