143491968 has 144 divisors (see below), whose sum is σ = 439648560. Its totient is φ = 44912640.

The previous prime is 143491927. The next prime is 143491969. The reversal of 143491968 is 869194341.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143491969) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 332713 + ... + 333143.

It is an arithmetic number, because the mean of its divisors is an integer number (3053115).

Almost surely, 2^143491968 is an apocalyptic number.

143491968 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 143491968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219824280).

143491968 is an abundant number, since it is smaller than the sum of its proper divisors (296156592).

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

143491968 is a wasteful number, since it uses less digits than its factorization.

143491968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 453 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 143491968 is about 11978.8132968170. The cubic root of 143491968 is about 523.5311541572.

The spelling of 143491968 in words is "one hundred forty-three million, four hundred ninety-one thousand, nine hundred sixty-eight".