83281072 has 40 divisors (see below), whose sum is σ = 184971296. Its totient is φ = 35582976.

The previous prime is 83281057. The next prime is 83281103. The reversal of 83281072 is 27018238.

It is an unprimeable number.

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, 43528 + ... + 45400.

Almost surely, 2^83281072 is an apocalyptic number.

It is an amenable number.

83281072 is an abundant number, since it is smaller than the sum of its proper divisors (101690224).

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

83281072 is a wasteful number, since it uses less digits than its factorization.

83281072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 83281072 is about 9125.8463717071. The cubic root of 83281072 is about 436.6989043141.

The spelling of 83281072 in words is "eighty-three million, two hundred eighty-one thousand, seventy-two".