82189457 has 12 divisors (see below), whose sum is σ = 94952448. Its totient is φ = 69690000.

The previous prime is 82189439. The next prime is 82189477. The reversal of 82189457 is 75498128.

It is not a de Polignac number, because 82189457 - 2¹⁴ = 82173073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82189427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70832 + ... + 71982.

It is an arithmetic number, because the mean of its divisors is an integer number (7912704).

Almost surely, 2^82189457 is an apocalyptic number.

It is an amenable number.

82189457 is a deficient number, since it is larger than the sum of its proper divisors (12762991).

82189457 is a wasteful number, since it uses less digits than its factorization.

82189457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1259 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 82189457 is about 9065.8401155105. The cubic root of 82189457 is about 434.7824816404.

The spelling of 82189457 in words is "eighty-two million, one hundred eighty-nine thousand, four hundred fifty-seven".