72230302 has 4 divisors (see below), whose sum is σ = 108345456. Its totient is φ = 36115150.

The previous prime is 72230299. The next prime is 72230303. The reversal of 72230302 is 20303227.

It is a happy number.

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

It is a super-2 number, since 2×72230302² = 10434433054022408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72230302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72230303) 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 as a sum of consecutive naturals, namely, 18057574 + ... + 18057577.

It is an arithmetic number, because the mean of its divisors is an integer number (27086364).

Almost surely, 2^72230302 is an apocalyptic number.

72230302 is a deficient number, since it is larger than the sum of its proper divisors (36115154).

72230302 is a wasteful number, since it uses less digits than its factorization.

72230302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36115153.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 72230302 is about 8498.8412151304. The cubic root of 72230302 is about 416.4598549842.

Adding to 72230302 its reverse (20303227), we get a palindrome (92533529).

The spelling of 72230302 in words is "seventy-two million, two hundred thirty thousand, three hundred two".