82821075 has 24 divisors (see below), whose sum is σ = 137709936. Its totient is φ = 43920000.

The previous prime is 82821041. The next prime is 82821113. The reversal of 82821075 is 57012828.

It is not a de Polignac number, because 82821075 - 2¹¹ = 82819027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10525 + ... + 16625.

It is an arithmetic number, because the mean of its divisors is an integer number (5737914).

Almost surely, 2^82821075 is an apocalyptic number.

82821075 is a deficient number, since it is larger than the sum of its proper divisors (54888861).

82821075 is a wasteful number, since it uses less digits than its factorization.

82821075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 82821075 is about 9100.6084961391. The cubic root of 82821075 is about 435.8933944536.

The spelling of 82821075 in words is "eighty-two million, eight hundred twenty-one thousand, seventy-five".