83280918 has 16 divisors (see below), whose sum is σ = 190356480. Its totient is φ = 23794536.

The previous prime is 83280917. The next prime is 83280937. The reversal of 83280918 is 81908238.

It is a super-2 number, since 2×83280918² = 13871422605845448, which contains 22 as substring.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991398 + ... + 991481.

It is an arithmetic number, because the mean of its divisors is an integer number (11897280).

Almost surely, 2^83280918 is an apocalyptic number.

83280918 is an abundant number, since it is smaller than the sum of its proper divisors (107075562).

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

83280918 is a wasteful number, since it uses less digits than its factorization.

83280918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982891.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 83280918 is about 9125.8379341297. The cubic root of 83280918 is about 436.6986351386.

The spelling of 83280918 in words is "eighty-three million, two hundred eighty thousand, nine hundred eighteen".