82809514 has 4 divisors (see below), whose sum is σ = 124214274. Its totient is φ = 41404756.

The previous prime is 82809511. The next prime is 82809523. The reversal of 82809514 is 41590828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48762289 + 34047225 = 6983^2 + 5835^2 .

It is not an unprimeable number, because it can be changed into a prime (82809511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20702377 + ... + 20702380.

Almost surely, 2^82809514 is an apocalyptic number.

82809514 is a deficient number, since it is larger than the sum of its proper divisors (41404760).

82809514 is a wasteful number, since it uses less digits than its factorization.

82809514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41404759.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 82809514 is about 9099.9732966641. The cubic root of 82809514 is about 435.8731113793.

The spelling of 82809514 in words is "eighty-two million, eight hundred nine thousand, five hundred fourteen".