30000405 has 32 divisors (see below), whose sum is σ = 49996800. Its totient is φ = 15344640.

The previous prime is 30000401. The next prime is 30000419. The reversal of 30000405 is 50400003.

It is not a de Polignac number, because 30000405 - 2² = 30000401 is a prime.

30000405 is a modest number, since divided by 405 gives 30 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69069 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^30000405 is an apocalyptic number.

It is an amenable number.

30000405 is a deficient number, since it is larger than the sum of its proper divisors (19996395).

30000405 is a wasteful number, since it uses less digits than its factorization.

30000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 30000405 is about 5477.2625461995. The cubic root of 30000405 is about 310.7246488437.

Adding to 30000405 its reverse (50400003), we get a palindrome (80400408).

The spelling of 30000405 in words is "thirty million, four hundred five", and thus it is an aban number.