224145320 has 32 divisors (see below), whose sum is σ = 576374400. Its totient is φ = 76849728.

The previous prime is 224145269. The next prime is 224145349. The reversal of 224145320 is 23541422.

It is a happy number.

It is a super-2 number, since 2×224145320² = 100482248955804800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399980 + ... + 400539.

It is an arithmetic number, because the mean of its divisors is an integer number (18011700).

Almost surely, 2^224145320 is an apocalyptic number.

224145320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224145320 is an abundant number, since it is smaller than the sum of its proper divisors (352229080).

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

224145320 is a wasteful number, since it uses less digits than its factorization.

224145320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800537 (or 800533 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 224145320 is about 14971.4835604225. The cubic root of 224145320 is about 607.4490984578.

Adding to 224145320 its reverse (23541422), we get a palindrome (247686742).

The spelling of 224145320 in words is "two hundred twenty-four million, one hundred forty-five thousand, three hundred twenty".