72544212 has 36 divisors (see below), whose sum is σ = 197482740. Its totient is φ = 22321152.

The previous prime is 72544201. The next prime is 72544243. The reversal of 72544212 is 21244527.

It can be written as a sum of positive squares in 2 ways, for example, as 31404816 + 41139396 = 5604^2 + 6414^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77037 + ... + 77972.

Almost surely, 2^72544212 is an apocalyptic number.

It is an amenable number.

72544212 is an abundant number, since it is smaller than the sum of its proper divisors (124938528).

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

72544212 is a wasteful number, since it uses less digits than its factorization.

72544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155032 (or 155027 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 72544212 is about 8517.2890053115. The cubic root of 72544212 is about 417.0622890579.

Adding to 72544212 its reverse (21244527), we get a palindrome (93788739).

The spelling of 72544212 in words is "seventy-two million, five hundred forty-four thousand, two hundred twelve".