143631648 has 72 divisors (see below), whose sum is σ = 409909500. Its totient is φ = 47706624.

The previous prime is 143631641. The next prime is 143631667. The reversal of 143631648 is 846136341.

It is a happy number.

143631648 is a `hidden beast` number, since 1 + 4 + 3 + 6 + 3 + 1 + 648 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 140849424 + 2782224 = 11868^2 + 1668^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (143631641) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 99798 + ... + 101226.

Almost surely, 2^143631648 is an apocalyptic number.

143631648 is a gapful number since it is divisible by the number (18) 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 143631648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204954750).

143631648 is an abundant number, since it is smaller than the sum of its proper divisors (266277852).

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

143631648 is a wasteful number, since it uses less digits than its factorization.

143631648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1783 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 143631648 is about 11984.6421723805. The cubic root of 143631648 is about 523.7009734565.

Adding to 143631648 its reverse (846136341), we get a palindrome (989767989).

The spelling of 143631648 in words is "one hundred forty-three million, six hundred thirty-one thousand, six hundred forty-eight".