30648389 has 8 divisors (see below), whose sum is σ = 31826520. Its totient is φ = 29478400.

The previous prime is 30648353. The next prime is 30648391. The reversal of 30648389 is 98384603.

It can be written as a sum of positive squares in 4 ways, for example, as 6225025 + 24423364 = 2495^2 + 4942^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30648389 - 2¹² = 30644293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30648329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6269 + ... + 10029.

It is an arithmetic number, because the mean of its divisors is an integer number (3978315).

Almost surely, 2^30648389 is an apocalyptic number.

It is an amenable number.

30648389 is a deficient number, since it is larger than the sum of its proper divisors (1178131).

30648389 is a wasteful number, since it uses less digits than its factorization.

30648389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 30648389 is about 5536.0987166054. The cubic root of 30648389 is about 312.9458646725.

The spelling of 30648389 in words is "thirty million, six hundred forty-eight thousand, three hundred eighty-nine".