72752212 has 24 divisors (see below), whose sum is σ = 140819336. Its totient is φ = 32669568.

The previous prime is 72752203. The next prime is 72752221. The reversal of 72752212 is 21225727.

It is an interprime number because it is at equal distance from previous prime (72752203) and next prime (72752221).

It can be written as a sum of positive squares in 4 ways, for example, as 93636 + 72658576 = 306^2 + 8524^2 .

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, 16983 + ... + 20830.

Almost surely, 2^72752212 is an apocalyptic number.

It is an amenable number.

72752212 is a deficient number, since it is larger than the sum of its proper divisors (68067124).

72752212 is a wasteful number, since it uses less digits than its factorization.

72752212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37867 (or 37865 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 72752212 is about 8529.4907233668. The cubic root of 72752212 is about 417.4605114025.

Adding to 72752212 its reverse (21225727), we get a palindrome (93977939).

The spelling of 72752212 in words is "seventy-two million, seven hundred fifty-two thousand, two hundred twelve".