30648505 has 8 divisors (see below), whose sum is σ = 38046600. Its totient is φ = 23673216.

The previous prime is 30648503. The next prime is 30648523. The reversal of 30648505 is 50584603.

It can be written as a sum of positive squares in 4 ways, for example, as 2812329 + 27836176 = 1677^2 + 5276^2 .

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 30648505 - 2¹ = 30648503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30648503) 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, 105540 + ... + 105829.

It is an arithmetic number, because the mean of its divisors is an integer number (4755825).

Almost surely, 2^30648505 is an apocalyptic number.

It is an amenable number.

30648505 is a deficient number, since it is larger than the sum of its proper divisors (7398095).

30648505 is a wasteful number, since it uses less digits than its factorization.

30648505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211403.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 30648505 is about 5536.1091932873. The cubic root of 30648505 is about 312.9462594912.

The spelling of 30648505 in words is "thirty million, six hundred forty-eight thousand, five hundred five".