30440705 has 4 divisors (see below), whose sum is σ = 36528852. Its totient is φ = 24352560.

The previous prime is 30440701. The next prime is 30440719. The reversal of 30440705 is 50704403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 21464689 = 2996^2 + 4633^2 .

It is not a de Polignac number, because 30440705 - 2² = 30440701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30440701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3044066 + ... + 3044075.

It is an arithmetic number, because the mean of its divisors is an integer number (9132213).

Almost surely, 2^30440705 is an apocalyptic number.

It is an amenable number.

30440705 is a deficient number, since it is larger than the sum of its proper divisors (6088147).

30440705 is an equidigital number, since it uses as much as digits as its factorization.

30440705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088146.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 30440705 is about 5517.3095798586. The cubic root of 30440705 is about 312.2373857699.

The spelling of 30440705 in words is "thirty million, four hundred forty thousand, seven hundred five".