82130472 has 48 divisors (see below), whose sum is σ = 223060500. Its totient is φ = 27300096.

The previous prime is 82130471. The next prime is 82130507. The reversal of 82130472 is 27403128.

It can be written as a sum of positive squares in 2 ways, for example, as 74545956 + 7584516 = 8634^2 + 2754^2 .

It is not an unprimeable number, because it can be changed into a prime (82130471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28054 + ... + 30842.

Almost surely, 2^82130472 is an apocalyptic number.

It is an amenable number.

82130472 is an abundant number, since it is smaller than the sum of its proper divisors (140930028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82130472 is a wasteful number, since it uses less digits than its factorization.

82130472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 82130472 is about 9062.5863857952. The cubic root of 82130472 is about 434.6784464713.

The spelling of 82130472 in words is "eighty-two million, one hundred thirty thousand, four hundred seventy-two".