143891264 has 84 divisors (see below), whose sum is σ = 332617572. Its totient is φ = 61501440.

The previous prime is 143891221. The next prime is 143891269. The reversal of 143891264 is 462198341.

It can be written as a sum of positive squares in 2 ways, for example, as 130873600 + 13017664 = 11440^2 + 3608^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143891269) 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, 131102 + ... + 132194.

It is an arithmetic number, because the mean of its divisors is an integer number (3959733).

Almost surely, 2^143891264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143891264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166308786).

143891264 is an abundant number, since it is smaller than the sum of its proper divisors (188726308).

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

143891264 is a wasteful number, since it uses less digits than its factorization.

143891264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1123 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 143891264 is about 11995.4684777211. The cubic root of 143891264 is about 524.0163155575.

The spelling of 143891264 in words is "one hundred forty-three million, eight hundred ninety-one thousand, two hundred sixty-four".