82161516 has 24 divisors (see below), whose sum is σ = 192984064. Its totient is φ = 27205200.

The previous prime is 82161487. The next prime is 82161517. The reversal of 82161516 is 61516128.

It is a super-2 number, since 2×82161516² = 13501029422836512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82161517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20860 + ... + 24483.

Almost surely, 2^82161516 is an apocalyptic number.

It is an amenable number.

82161516 is an abundant number, since it is smaller than the sum of its proper divisors (110822548).

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

82161516 is a wasteful number, since it uses less digits than its factorization.

82161516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45501 (or 45499 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 82161516 is about 9064.2989800646. The cubic root of 82161516 is about 434.7332067307.

The spelling of 82161516 in words is "eighty-two million, one hundred sixty-one thousand, five hundred sixteen".