72013210 has 16 divisors (see below), whose sum is σ = 130165992. Its totient is φ = 28684800.

The previous prime is 72013187. The next prime is 72013213. The reversal of 72013210 is 1231027.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51969681 + 20043529 = 7209^2 + 4477^2 .

It is not an unprimeable number, because it can be changed into a prime (72013213) 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 7 ways as a sum of consecutive naturals, for example, 12531 + ... + 17350.

Almost surely, 2^72013210 is an apocalyptic number.

72013210 is a deficient number, since it is larger than the sum of its proper divisors (58152782).

72013210 is a wasteful number, since it uses less digits than its factorization.

72013210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30129.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 72013210 is about 8486.0597452528. The cubic root of 72013210 is about 416.0422055613.

Adding to 72013210 its reverse (1231027), we get a palindrome (73244237).

The spelling of 72013210 in words is "seventy-two million, thirteen thousand, two hundred ten".