30440305 has 16 divisors (see below), whose sum is σ = 42053760. Its totient is φ = 20719872.

The previous prime is 30440297. The next prime is 30440341. The reversal of 30440305 is 50304403.

It is a cyclic number.

It is not a de Polignac number, because 30440305 - 2³ = 30440297 is a prime.

It is a super-2 number, since 2×30440305² = 1853224336986050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1737 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (2628360).

Almost surely, 2^30440305 is an apocalyptic number.

30440305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30440305 is a deficient number, since it is larger than the sum of its proper divisors (11613455).

30440305 is a wasteful number, since it uses less digits than its factorization.

30440305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30440305 is about 5517.2733301877. The cubic root of 30440305 is about 312.2360181329.

Adding to 30440305 its reverse (50304403), we get a palindrome (80744708).

The spelling of 30440305 in words is "thirty million, four hundred forty thousand, three hundred five".