72967229 has 4 divisors (see below), whose sum is σ = 73086876. Its totient is φ = 72847584.

The previous prime is 72967187. The next prime is 72967231. The reversal of 72967229 is 92276927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16687225 + 56280004 = 4085^2 + 7502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72967229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72967229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72967729) 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 3 ways as a sum of consecutive naturals, for example, 58904 + ... + 60129.

It is an arithmetic number, because the mean of its divisors is an integer number (18271719).

Almost surely, 2^72967229 is an apocalyptic number.

It is an amenable number.

72967229 is a deficient number, since it is larger than the sum of its proper divisors (119647).

72967229 is a wasteful number, since it uses less digits than its factorization.

72967229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119646.

The product of its digits is 190512, while the sum is 44.

The square root of 72967229 is about 8542.0857523207. The cubic root of 72967229 is about 417.8713709511.

The spelling of 72967229 in words is "seventy-two million, nine hundred sixty-seven thousand, two hundred twenty-nine".