82081370 has 48 divisors (see below), whose sum is σ = 173352960. Its totient is φ = 27899424.

The previous prime is 82081369. The next prime is 82081379. The reversal of 82081370 is 7318028.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82081379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61571 + ... + 62889.

It is an arithmetic number, because the mean of its divisors is an integer number (3611520).

Almost surely, 2^82081370 is an apocalyptic number.

82081370 is an abundant number, since it is smaller than the sum of its proper divisors (91271590).

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

82081370 is a wasteful number, since it uses less digits than its factorization.

82081370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 82081370 is about 9059.8769307315. The cubic root of 82081370 is about 434.5918045083.

Adding to 82081370 its reverse (7318028), we get a palindrome (89399398).

The spelling of 82081370 in words is "eighty-two million, eighty-one thousand, three hundred seventy".