72161082 has 24 divisors (see below), whose sum is σ = 178684896. Its totient is φ = 20617416.

The previous prime is 72161057. The next prime is 72161083. The reversal of 72161082 is 28016127.

It is not an unprimeable number, because it can be changed into a prime (72161083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286228 + ... + 286479.

It is an arithmetic number, because the mean of its divisors is an integer number (7445204).

Almost surely, 2^72161082 is an apocalyptic number.

72161082 is an abundant number, since it is smaller than the sum of its proper divisors (106523814).

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

72161082 is a wasteful number, since it uses less digits than its factorization.

72161082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572722 (or 572719 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 72161082 is about 8494.7679191370. The cubic root of 72161082 is about 416.3267780349.

The spelling of 72161082 in words is "seventy-two million, one hundred sixty-one thousand, eighty-two".