143222400 has 144 divisors (see below), whose sum is σ = 511153110. Its totient is φ = 38184960.

The previous prime is 143222381. The next prime is 143222411. The reversal of 143222400 is 4222341.

143222400 is a `hidden beast` number, since 1 + 43 + 222 + 400 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 115089984 + 28132416 = 10728^2 + 5304^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26314 + ... + 31286.

Almost surely, 2^143222400 is an apocalyptic number.

143222400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255576555).

143222400 is an abundant number, since it is smaller than the sum of its proper divisors (367930710).

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

143222400 is a wasteful number, since it uses less digits than its factorization.

143222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4983 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 143222400 is about 11967.5561415019. The cubic root of 143222400 is about 523.2031085863.

Adding to 143222400 its reverse (4222341), we get a palindrome (147444741).

It can be divided in two parts, 1432 and 22400, that added together give a palindrome (23832).

The spelling of 143222400 in words is "one hundred forty-three million, two hundred twenty-two thousand, four hundred".