72630212 has 6 divisors (see below), whose sum is σ = 127102878. Its totient is φ = 36315104.

The previous prime is 72630203. The next prime is 72630227. The reversal of 72630212 is 21203627.

It can be written as a sum of positive squares in only one way, i.e., 41783296 + 30846916 = 6464^2 + 5554^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9078773 + ... + 9078780.

It is an arithmetic number, because the mean of its divisors is an integer number (21183813).

Almost surely, 2^72630212 is an apocalyptic number.

It is an amenable number.

72630212 is a deficient number, since it is larger than the sum of its proper divisors (54472666).

72630212 is a wasteful number, since it uses less digits than its factorization.

72630212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18157557 (or 18157555 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 72630212 is about 8522.3360647184. The cubic root of 72630212 is about 417.2270308607.

Adding to 72630212 its reverse (21203627), we get a palindrome (93833839).

It can be divided in two parts, 726 and 30212, that multiplied together give a palindrome (21933912).

The spelling of 72630212 in words is "seventy-two million, six hundred thirty thousand, two hundred twelve".