72330621 has 16 divisors (see below), whose sum is σ = 105492288. Its totient is φ = 43718400.

The previous prime is 72330613. The next prime is 72330649. The reversal of 72330621 is 12603327.

It is not a de Polignac number, because 72330621 - 2³ = 72330613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72330591 and 72330600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72330521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10341 + ... + 15861.

It is an arithmetic number, because the mean of its divisors is an integer number (6593268).

Almost surely, 2^72330621 is an apocalyptic number.

It is an amenable number.

72330621 is a deficient number, since it is larger than the sum of its proper divisors (33161667).

72330621 is a wasteful number, since it uses less digits than its factorization.

72330621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 72330621 is about 8504.7410895335. The cubic root of 72330621 is about 416.6525696208.

Adding to 72330621 its reverse (12603327), we get a palindrome (84933948).

It can be divided in two parts, 723306 and 21, that added together give a palindrome (723327).

The spelling of 72330621 in words is "seventy-two million, three hundred thirty thousand, six hundred twenty-one".