143820000 has 360 divisors, whose sum is σ = 552648096. Its totient is φ = 35328000.

The previous prime is 143819969. The next prime is 143820011. The reversal of 143820000 is 28341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3059977 + ... + 3060023.

Almost surely, 2^143820000 is an apocalyptic number.

143820000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143820000 is the 9792-nd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143820000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276324048).

143820000 is an abundant number, since it is smaller than the sum of its proper divisors (408828096).

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

143820000 is a wasteful number, since it uses less digits than its factorization.

143820000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 143820000 is about 11992.4976547840. The cubic root of 143820000 is about 523.9297926644.

Adding to 143820000 its reverse (28341), we get a palindrome (143848341).

The spelling of 143820000 in words is "one hundred forty-three million, eight hundred twenty thousand".