30500405 has 8 divisors (see below), whose sum is σ = 39415992. Its totient is φ = 22523328.

The previous prime is 30500383. The next prime is 30500413. The reversal of 30500405 is 50400503.

It can be written as a sum of positive squares in 4 ways, for example, as 4866436 + 25633969 = 2206^2 + 5063^2 .

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 30500405 - 2¹² = 30496309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234554 + ... + 234683.

It is an arithmetic number, because the mean of its divisors is an integer number (4926999).

Almost surely, 2^30500405 is an apocalyptic number.

It is an amenable number.

30500405 is a deficient number, since it is larger than the sum of its proper divisors (8915587).

30500405 is a wasteful number, since it uses less digits than its factorization.

30500405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469255.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 30500405 is about 5522.7171754491. The cubic root of 30500405 is about 312.4413714013.

Adding to 30500405 its reverse (50400503), we get a palindrome (80900908).

The spelling of 30500405 in words is "thirty million, five hundred thousand, four hundred five".