82143500 has 48 divisors (see below), whose sum is σ = 183822912. Its totient is φ = 32048000.

The previous prime is 82143493. The next prime is 82143527. The reversal of 82143500 is 534128.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18497 + ... + 22503.

It is an arithmetic number, because the mean of its divisors is an integer number (3829644).

Almost surely, 2^82143500 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 82143500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91911456).

82143500 is an abundant number, since it is smaller than the sum of its proper divisors (101679412).

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

82143500 is a wasteful number, since it uses less digits than its factorization.

82143500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067 (or 4055 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 82143500 is about 9063.3051366486. The cubic root of 82143500 is about 434.7014289740.

Adding to 82143500 its reverse (534128), we get a palindrome (82677628).

The spelling of 82143500 in words is "eighty-two million, one hundred forty-three thousand, five hundred".