82628945 has 12 divisors (see below), whose sum is σ = 115343604. Its totient is φ = 56659680.

The previous prime is 82628941. The next prime is 82628963. The reversal of 82628945 is 54982628.

It can be written as a sum of positive squares in 2 ways, for example, as 25897921 + 56731024 = 5089^2 + 7532^2 .

It is not a de Polignac number, because 82628945 - 2² = 82628941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82628896 and 82628905.

It is not an unprimeable number, because it can be changed into a prime (82628941) 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 11 ways as a sum of consecutive naturals, for example, 168386 + ... + 168875.

It is an arithmetic number, because the mean of its divisors is an integer number (9611967).

Almost surely, 2^82628945 is an apocalyptic number.

It is an amenable number.

82628945 is a deficient number, since it is larger than the sum of its proper divisors (32714659).

82628945 is a wasteful number, since it uses less digits than its factorization.

82628945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337280 (or 337273 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 82628945 is about 9090.0464795291. The cubic root of 82628945 is about 435.5560687116.

The spelling of 82628945 in words is "eighty-two million, six hundred twenty-eight thousand, nine hundred forty-five".