228561481 has 8 divisors (see below), whose sum is σ = 249813504. Its totient is φ = 208176960.

The previous prime is 228561479. The next prime is 228561491. The reversal of 228561481 is 184165822.

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

It is a cyclic number.

It is not a de Polignac number, because 228561481 - 2¹ = 228561479 is a prime.

It is a super-2 number, since 2×228561481² = 104480701193826722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228561481.

It is not an unprimeable number, because it can be changed into a prime (228561401) 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, 216325 + ... + 217378.

It is an arithmetic number, because the mean of its divisors is an integer number (31226688).

Almost surely, 2^228561481 is an apocalyptic number.

It is an amenable number.

228561481 is a deficient number, since it is larger than the sum of its proper divisors (21252023).

228561481 is a wasteful number, since it uses less digits than its factorization.

228561481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433751.

The product of its digits is 30720, while the sum is 37.

The square root of 228561481 is about 15118.2499317877. The cubic root of 228561481 is about 611.4125475230.

The spelling of 228561481 in words is "two hundred twenty-eight million, five hundred sixty-one thousand, four hundred eighty-one".