82130548 has 18 divisors (see below), whose sum is σ = 145762134. Its totient is φ = 40492224.

The previous prime is 82130509. The next prime is 82130557. The reversal of 82130548 is 84503128.

It can be written as a sum of positive squares in 3 ways, for example, as 42667024 + 39463524 = 6532^2 + 6282^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19390 + ... + 23242.

Almost surely, 2^82130548 is an apocalyptic number.

It is an amenable number.

82130548 is a deficient number, since it is larger than the sum of its proper divisors (63631586).

82130548 is a wasteful number, since it uses less digits than its factorization.

82130548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3928 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 82130548 is about 9062.5905788577. The cubic root of 82130548 is about 434.6785805488.

The spelling of 82130548 in words is "eighty-two million, one hundred thirty thousand, five hundred forty-eight".