82002891 has 4 divisors (see below), whose sum is σ = 109337192. Its totient is φ = 54668592.

The previous prime is 82002887. The next prime is 82002913. The reversal of 82002891 is 19820028.

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

It is not a de Polignac number, because 82002891 - 2² = 82002887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82002881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13667146 + ... + 13667151.

It is an arithmetic number, because the mean of its divisors is an integer number (27334298).

Almost surely, 2^82002891 is an apocalyptic number.

82002891 is a deficient number, since it is larger than the sum of its proper divisors (27334301).

82002891 is a wasteful number, since it uses less digits than its factorization.

82002891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27334300.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 82002891 is about 9055.5447655014. The cubic root of 82002891 is about 434.4532541656.

The spelling of 82002891 in words is "eighty-two million, two thousand, eight hundred ninety-one".