30080621 has 4 divisors (see below), whose sum is σ = 30356700. Its totient is φ = 29804544.

The previous prime is 30080587. The next prime is 30080623. The reversal of 30080621 is 12608003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12608003 = 2719 ⋅4637.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 17556100 = 3539^2 + 4190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30080621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30080593 and 30080602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30080623) 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 3 ways as a sum of consecutive naturals, for example, 137876 + ... + 138093.

It is an arithmetic number, because the mean of its divisors is an integer number (7589175).

Almost surely, 2^30080621 is an apocalyptic number.

It is an amenable number.

30080621 is a deficient number, since it is larger than the sum of its proper divisors (276079).

30080621 is a wasteful number, since it uses less digits than its factorization.

30080621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276078.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30080621 is about 5484.5802938785. The cubic root of 30080621 is about 311.0013440663.

Adding to 30080621 its reverse (12608003), we get a palindrome (42688624).

The spelling of 30080621 in words is "thirty million, eighty thousand, six hundred twenty-one".