83031240 has 64 divisors (see below), whose sum is σ = 249739200. Its totient is φ = 22084352.

The previous prime is 83031239. The next prime is 83031253. The reversal of 83031240 is 4213038.

It is a happy number.

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, 66946 + ... + 68174.

It is an arithmetic number, because the mean of its divisors is an integer number (3902175).

Almost surely, 2^83031240 is an apocalyptic number.

It is an amenable number.

83031240 is an abundant number, since it is smaller than the sum of its proper divisors (166707960).

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

83031240 is a wasteful number, since it uses less digits than its factorization.

83031240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1802 counting only the distinct ones).

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

The square root of 83031240 is about 9112.1479355858. The cubic root of 83031240 is about 436.2617876252.

Adding to 83031240 its reverse (4213038), we get a palindrome (87244278).

The spelling of 83031240 in words is "eighty-three million, thirty-one thousand, two hundred forty".