83299280 has 20 divisors (see below), whose sum is σ = 193671012. Its totient is φ = 33319680.

The previous prime is 83299243. The next prime is 83299289. The reversal of 83299280 is 8299238.

It can be written as a sum of positive squares in 2 ways, for example, as 64705936 + 18593344 = 8044^2 + 4312^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83299289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520541 + ... + 520700.

Almost surely, 2^83299280 is an apocalyptic number.

83299280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83299280 is an abundant number, since it is smaller than the sum of its proper divisors (110371732).

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

83299280 is a wasteful number, since it uses less digits than its factorization.

83299280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041254 (or 1041248 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 83299280 is about 9126.8439232848. The cubic root of 83299280 is about 436.7307276086.

The spelling of 83299280 in words is "eighty-three million, two hundred ninety-nine thousand, two hundred eighty".