82123270 has 16 divisors (see below), whose sum is σ = 147925440. Its totient is φ = 32826304.

The previous prime is 82123267. The next prime is 82123289. The reversal of 82123270 is 7232128.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24771 + ... + 27889.

It is an arithmetic number, because the mean of its divisors is an integer number (9245340).

Almost surely, 2^82123270 is an apocalyptic number.

82123270 is a deficient number, since it is larger than the sum of its proper divisors (65802170).

82123270 is a wasteful number, since it uses less digits than its factorization.

82123270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 82123270 is about 9062.1890291474. The cubic root of 82123270 is about 434.6657404861.

Adding to 82123270 its reverse (7232128), we get a palindrome (89355398).

The spelling of 82123270 in words is "eighty-two million, one hundred twenty-three thousand, two hundred seventy".