224489381 has 8 divisors (see below), whose sum is σ = 228014424. Its totient is φ = 220976640.

The previous prime is 224489371. The next prime is 224489393. The reversal of 224489381 is 183984422.

It can be written as a sum of positive squares in 4 ways, for example, as 1136356 + 223353025 = 1066^2 + 14945^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224489381 is a prime.

It is a super-2 number, since 2×224489381² = 100790964363526322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224489311) 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, 37901 + ... + 43421.

It is an arithmetic number, because the mean of its divisors is an integer number (28501803).

Almost surely, 2^224489381 is an apocalyptic number.

It is an amenable number.

224489381 is a deficient number, since it is larger than the sum of its proper divisors (3525043).

224489381 is an equidigital number, since it uses as much as digits as its factorization.

224489381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151.

The product of its digits is 110592, while the sum is 41.

The square root of 224489381 is about 14982.9696989616. The cubic root of 224489381 is about 607.7597491521.

The spelling of 224489381 in words is "two hundred twenty-four million, four hundred eighty-nine thousand, three hundred eighty-one".