83278530 has 96 divisors (see below), whose sum is σ = 230053824. Its totient is φ = 21663936.

The previous prime is 83278523. The next prime is 83278549. The reversal of 83278530 is 3587238.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104092 + ... + 104888.

It is an arithmetic number, because the mean of its divisors is an integer number (2396394).

Almost surely, 2^83278530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83278530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115026912).

83278530 is an abundant number, since it is smaller than the sum of its proper divisors (146775294).

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

83278530 is a wasteful number, since it uses less digits than its factorization.

83278530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 83278530 is about 9125.7070958913. The cubic root of 83278530 is about 436.6944611279.

The spelling of 83278530 in words is "eighty-three million, two hundred seventy-eight thousand, five hundred thirty".