223512144 has 20 divisors (see below), whose sum is σ = 577406496. Its totient is φ = 74504032.

The previous prime is 223512103. The next prime is 223512161. The reversal of 223512144 is 441215322.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2328204 + ... + 2328299.

Almost surely, 2^223512144 is an apocalyptic number.

223512144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

223512144 is an abundant number, since it is smaller than the sum of its proper divisors (353894352).

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

223512144 is a wasteful number, since it uses less digits than its factorization.

223512144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656514 (or 4656508 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 223512144 is about 14950.3225383267. The cubic root of 223512144 is about 606.8765756469.

Adding to 223512144 its reverse (441215322), we get a palindrome (664727466).

The spelling of 223512144 in words is "two hundred twenty-three million, five hundred twelve thousand, one hundred forty-four".