72530302 has 8 divisors (see below), whose sum is σ = 117164376. Its totient is φ = 33475512.

The previous prime is 72530261. The next prime is 72530309. The reversal of 72530302 is 20303527.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72530302² = 10521289416422408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72530309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394788 + ... + 1394839.

It is an arithmetic number, because the mean of its divisors is an integer number (14645547).

Almost surely, 2^72530302 is an apocalyptic number.

72530302 is a deficient number, since it is larger than the sum of its proper divisors (44634074).

72530302 is a wasteful number, since it uses less digits than its factorization.

72530302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789642.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 72530302 is about 8516.4723917829. The cubic root of 72530302 is about 417.0356307985.

Adding to 72530302 its reverse (20303527), we get a palindrome (92833829).

The spelling of 72530302 in words is "seventy-two million, five hundred thirty thousand, three hundred two".