72824212 has 6 divisors (see below), whose sum is σ = 127442378. Its totient is φ = 36412104.

The previous prime is 72824201. The next prime is 72824221. The reversal of 72824212 is 21242827.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 10666756 = 7884^2 + 3266^2 .

It is a congruent number.

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, 9103023 + ... + 9103030.

Almost surely, 2^72824212 is an apocalyptic number.

It is an amenable number.

72824212 is a deficient number, since it is larger than the sum of its proper divisors (54618166).

72824212 is a wasteful number, since it uses less digits than its factorization.

72824212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18206057 (or 18206055 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 72824212 is about 8533.7103302139. The cubic root of 72824212 is about 417.5981807415.

The spelling of 72824212 in words is "seventy-two million, eight hundred twenty-four thousand, two hundred twelve".