71728162 has 8 divisors (see below), whose sum is σ = 117373392. Its totient is φ = 32603700.

The previous prime is 71728109. The next prime is 71728169. The reversal of 71728162 is 26182717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71728169) by changing a digit.

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, 1630164 + ... + 1630207.

It is an arithmetic number, because the mean of its divisors is an integer number (14671674).

Almost surely, 2^71728162 is an apocalyptic number.

71728162 is a deficient number, since it is larger than the sum of its proper divisors (45645230).

71728162 is a wasteful number, since it uses less digits than its factorization.

71728162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260384.

The product of its digits is 9408, while the sum is 34.

The square root of 71728162 is about 8469.2480185669. The cubic root of 71728162 is about 415.4925433683.

The spelling of 71728162 in words is "seventy-one million, seven hundred twenty-eight thousand, one hundred sixty-two".