72161060 has 12 divisors (see below), whose sum is σ = 151538268. Its totient is φ = 28864416.

The previous prime is 72161057. The next prime is 72161083. The reversal of 72161060 is 6016127.

It can be written as a sum of positive squares in 2 ways, for example, as 38613796 + 33547264 = 6214^2 + 5792^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804007 + ... + 1804046.

It is an arithmetic number, because the mean of its divisors is an integer number (12628189).

Almost surely, 2^72161060 is an apocalyptic number.

It is an amenable number.

72161060 is an abundant number, since it is smaller than the sum of its proper divisors (79377208).

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

72161060 is a wasteful number, since it uses less digits than its factorization.

72161060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608062 (or 3608060 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 72161060 is about 8494.7666242222. The cubic root of 72161060 is about 416.3267357259.

Adding to 72161060 its reverse (6016127), we get a palindrome (78177187).

The spelling of 72161060 in words is "seventy-two million, one hundred sixty-one thousand, sixty".