83143968 has 24 divisors (see below), whose sum is σ = 218253168. Its totient is φ = 27714624.

The previous prime is 83143939. The next prime is 83143999. The reversal of 83143968 is 86934138.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432946 + ... + 433137.

It is an arithmetic number, because the mean of its divisors is an integer number (9093882).

Almost surely, 2^83143968 is an apocalyptic number.

It is an amenable number.

83143968 is an abundant number, since it is smaller than the sum of its proper divisors (135109200).

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

83143968 is a wasteful number, since it uses less digits than its factorization.

83143968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866096 (or 866088 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 83143968 is about 9118.3314263082. The cubic root of 83143968 is about 436.4591297321.

The spelling of 83143968 in words is "eighty-three million, one hundred forty-three thousand, nine hundred sixty-eight".