143471988 has 36 divisors (see below), whose sum is σ = 395635968. Its totient is φ = 43476240.

The previous prime is 143471969. The next prime is 143471989. The reversal of 143471988 is 889174341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×143471988² = 41168422681344288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143471989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180756 + ... + 181547.

It is an arithmetic number, because the mean of its divisors is an integer number (10989888).

Almost surely, 2^143471988 is an apocalyptic number.

143471988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

143471988 is an abundant number, since it is smaller than the sum of its proper divisors (252163980).

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

143471988 is a wasteful number, since it uses less digits than its factorization.

143471988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362324 (or 362319 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 143471988 is about 11977.9792953570. The cubic root of 143471988 is about 523.5068539864.

The spelling of 143471988 in words is "one hundred forty-three million, four hundred seventy-one thousand, nine hundred eighty-eight".