72412212 has 24 divisors (see below), whose sum is σ = 170100000. Its totient is φ = 23974816.

The previous prime is 72412199. The next prime is 72412229. The reversal of 72412212 is 21221427.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18462 + ... + 22037.

It is an arithmetic number, because the mean of its divisors is an integer number (7087500).

Almost surely, 2^72412212 is an apocalyptic number.

It is an amenable number.

72412212 is an abundant number, since it is smaller than the sum of its proper divisors (97687788).

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

72412212 is a wasteful number, since it uses less digits than its factorization.

72412212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40655 (or 40653 counting only the distinct ones).

The product of its digits is 448, while the sum is 21.

The square root of 72412212 is about 8509.5365326203. The cubic root of 72412212 is about 416.8091760708.

Adding to 72412212 its reverse (21221427), we get a palindrome (93633639).

It can be divided in two parts, 7241 and 2212, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 72412212 in words is "seventy-two million, four hundred twelve thousand, two hundred twelve".