82571340 has 48 divisors (see below), whose sum is σ = 243371520. Its totient is φ = 20859840.

The previous prime is 82571327. The next prime is 82571341. The reversal of 82571340 is 4317528.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 82571298 and 82571307.

It is not an unprimeable number, because it can be changed into a prime (82571341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35076 + ... + 37355.

It is an arithmetic number, because the mean of its divisors is an integer number (5070240).

Almost surely, 2^82571340 is an apocalyptic number.

It is an amenable number.

82571340 is an abundant number, since it is smaller than the sum of its proper divisors (160800180).

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

82571340 is a wasteful number, since it uses less digits than its factorization.

82571340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72462 (or 72460 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 82571340 is about 9086.8773514338. The cubic root of 82571340 is about 435.4548288044.

Adding to 82571340 its reverse (4317528), we get a palindrome (86888868).

The spelling of 82571340 in words is "eighty-two million, five hundred seventy-one thousand, three hundred forty".