82011970 has 8 divisors (see below), whose sum is σ = 147621564. Its totient is φ = 32804784.

The previous prime is 82011967. The next prime is 82011977. The reversal of 82011970 is 7911028.

It can be written as a sum of positive squares in 2 ways, for example, as 75846681 + 6165289 = 8709^2 + 2483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (82011977) 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 3 ways as a sum of consecutive naturals, for example, 4100589 + ... + 4100608.

Almost surely, 2^82011970 is an apocalyptic number.

82011970 is a deficient number, since it is larger than the sum of its proper divisors (65609594).

82011970 is a wasteful number, since it uses less digits than its factorization.

82011970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201204.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 82011970 is about 9056.0460467027. The cubic root of 82011970 is about 434.4692871595.

Adding to 82011970 its reverse (7911028), we get a palindrome (89922998).

The spelling of 82011970 in words is "eighty-two million, eleven thousand, nine hundred seventy".