82161468 has 36 divisors (see below), whose sum is σ = 208255320. Its totient is φ = 27312096.

The previous prime is 82161467. The next prime is 82161473. The reversal of 82161468 is 86416128.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82161461) 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, 11071 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (5784870).

Almost surely, 2^82161468 is an apocalyptic number.

It is an amenable number.

82161468 is an abundant number, since it is smaller than the sum of its proper divisors (126093852).

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

82161468 is a wasteful number, since it uses less digits than its factorization.

82161468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266 (or 6261 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 82161468 is about 9064.2963323139. The cubic root of 82161468 is about 434.7331220715.

The spelling of 82161468 in words is "eighty-two million, one hundred sixty-one thousand, four hundred sixty-eight".