82191417 has 32 divisors (see below), whose sum is σ = 137134080. Its totient is φ = 42539520.

The previous prime is 82191401. The next prime is 82191419. The reversal of 82191417 is 71419128.

It is not a de Polignac number, because 82191417 - 2⁴ = 82191401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (82191419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88009 + ... + 88937.

It is an arithmetic number, because the mean of its divisors is an integer number (4285440).

Almost surely, 2^82191417 is an apocalyptic number.

It is an amenable number.

82191417 is a deficient number, since it is larger than the sum of its proper divisors (54942663).

82191417 is a wasteful number, since it uses less digits than its factorization.

82191417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 4032, while the sum is 33.

The square root of 82191417 is about 9065.9482129560. The cubic root of 82191417 is about 434.7859377483.

The spelling of 82191417 in words is "eighty-two million, one hundred ninety-one thousand, four hundred seventeen".