83320140 has 24 divisors (see below), whose sum is σ = 233296560. Its totient is φ = 22218688.

The previous prime is 83320129. The next prime is 83320147. The reversal of 83320140 is 4102338.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (83320147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694275 + ... + 694394.

It is an arithmetic number, because the mean of its divisors is an integer number (9720690).

Almost surely, 2^83320140 is an apocalyptic number.

It is an amenable number.

83320140 is an abundant number, since it is smaller than the sum of its proper divisors (149976420).

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

83320140 is a wasteful number, since it uses less digits than its factorization.

83320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388681 (or 1388679 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 83320140 is about 9127.9866345213. The cubic root of 83320140 is about 436.7671802750.

Adding to 83320140 its reverse (4102338), we get a palindrome (87422478).

The spelling of 83320140 in words is "eighty-three million, three hundred twenty thousand, one hundred forty".