83444240 has 40 divisors (see below), whose sum is σ = 211647168. Its totient is φ = 30343040.

The previous prime is 83444201. The next prime is 83444267. The reversal of 83444240 is 4244438.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46532 + ... + 48291.

Almost surely, 2^83444240 is an apocalyptic number.

83444240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83444240 is an abundant number, since it is smaller than the sum of its proper divisors (128202928).

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

83444240 is a wasteful number, since it uses less digits than its factorization.

83444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94847 (or 94841 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 83444240 is about 9134.7818802640. The cubic root of 83444240 is about 436.9839182641.

Adding to 83444240 its reverse (4244438), we get a palindrome (87688678).

The spelling of 83444240 in words is "eighty-three million, four hundred forty-four thousand, two hundred forty".