82781048 has 32 divisors (see below), whose sum is σ = 185103360. Its totient is φ = 33934560.

The previous prime is 82781011. The next prime is 82781059. The reversal of 82781048 is 84018728.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30848 + ... + 33423.

It is an arithmetic number, because the mean of its divisors is an integer number (5784480).

Almost surely, 2^82781048 is an apocalyptic number.

It is an amenable number.

82781048 is an abundant number, since it is smaller than the sum of its proper divisors (102322312).

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

82781048 is a wasteful number, since it uses less digits than its factorization.

82781048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64307 (or 64303 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 82781048 is about 9098.4090917039. The cubic root of 82781048 is about 435.8231614586.

The spelling of 82781048 in words is "eighty-two million, seven hundred eighty-one thousand, forty-eight".