82470393 has 40 divisors (see below), whose sum is σ = 132945120. Its totient is φ = 50777280.

The previous prime is 82470389. The next prime is 82470413. The reversal of 82470393 is 39307428.

It is not a de Polignac number, because 82470393 - 2² = 82470389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82470313) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62446 + ... + 63752.

It is an arithmetic number, because the mean of its divisors is an integer number (3323628).

Almost surely, 2^82470393 is an apocalyptic number.

It is an amenable number.

82470393 is a deficient number, since it is larger than the sum of its proper divisors (50474727).

82470393 is a wasteful number, since it uses less digits than its factorization.

82470393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 82470393 is about 9081.3211043328. The cubic root of 82470393 is about 435.2773023801.

It can be divided in two parts, 824 and 70393, that added together give a palindrome (71217).

The spelling of 82470393 in words is "eighty-two million, four hundred seventy thousand, three hundred ninety-three".