72706210 has 8 divisors (see below), whose sum is σ = 130871196. Its totient is φ = 29082480.

The previous prime is 72706187. The next prime is 72706211. The reversal of 72706210 is 1260727.

It can be written as a sum of positive squares in 2 ways, for example, as 60824401 + 11881809 = 7799^2 + 3447^2 .

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 (72706211) 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, 3635301 + ... + 3635320.

Almost surely, 2^72706210 is an apocalyptic number.

72706210 is a deficient number, since it is larger than the sum of its proper divisors (58164986).

72706210 is a wasteful number, since it uses less digits than its factorization.

72706210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7270628.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 72706210 is about 8526.7936529507. The cubic root of 72706210 is about 417.3725046053.

Adding to 72706210 its reverse (1260727), we get a palindrome (73966937).

The spelling of 72706210 in words is "seventy-two million, seven hundred six thousand, two hundred ten".