83280912 has 120 divisors (see below), whose sum is σ = 254900352. Its totient is φ = 23274240.

The previous prime is 83280889. The next prime is 83280917. The reversal of 83280912 is 21908238.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (83280917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74953 + ... + 76055.

Almost surely, 2^83280912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83280912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127450176).

83280912 is an abundant number, since it is smaller than the sum of its proper divisors (171619440).

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

83280912 is a wasteful number, since it uses less digits than its factorization.

83280912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 83280912 is about 9125.8376053927. The cubic root of 83280912 is about 436.6986246512.

The spelling of 83280912 in words is "eighty-three million, two hundred eighty thousand, nine hundred twelve".