223144400 has 30 divisors (see below), whose sum is σ = 536105382. Its totient is φ = 89257600.

The previous prime is 223144387. The next prime is 223144433. The reversal of 223144400 is 4441322.

223144400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 179776 + 222964624 = 424^2 + 14932^2 .

It is a super-3 number, since 3×223144400³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278531 + ... + 279330.

Almost surely, 2^223144400 is an apocalyptic number.

223144400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223144400 is an abundant number, since it is smaller than the sum of its proper divisors (312960982).

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

223144400 is a wasteful number, since it uses less digits than its factorization.

223144400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557879 (or 557868 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 223144400 is about 14938.0186102441. The cubic root of 223144400 is about 606.5435620814.

Adding to 223144400 its reverse (4441322), we get a palindrome (227585722).

The spelling of 223144400 in words is "two hundred twenty-three million, one hundred forty-four thousand, four hundred".