82055770 has 24 divisors (see below), whose sum is σ = 156905244. Its totient is φ = 30890496.

The previous prime is 82055759. The next prime is 82055773. The reversal of 82055770 is 7755028.

It can be written as a sum of positive squares in 6 ways, for example, as 77211369 + 4844401 = 8787^2 + 2201^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (82055773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11307 + ... + 17086.

Almost surely, 2^82055770 is an apocalyptic number.

82055770 is a deficient number, since it is larger than the sum of its proper divisors (74849474).

82055770 is a wasteful number, since it uses less digits than its factorization.

82055770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28434 (or 28417 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 82055770 is about 9058.4639978310. The cubic root of 82055770 is about 434.5466188305.

The spelling of 82055770 in words is "eighty-two million, fifty-five thousand, seven hundred seventy".