30404945 has 8 divisors (see below), whose sum is σ = 36519336. Its totient is φ = 24301696.

The previous prime is 30404929. The next prime is 30404947. The reversal of 30404945 is 54940403.

It can be written as a sum of positive squares in 4 ways, for example, as 2768896 + 27636049 = 1664^2 + 5257^2 .

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 30404945 - 2⁴ = 30404929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30404947) 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, 5429 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (4564917).

Almost surely, 2^30404945 is an apocalyptic number.

It is an amenable number.

30404945 is a deficient number, since it is larger than the sum of its proper divisors (6114391).

30404945 is a wasteful number, since it uses less digits than its factorization.

30404945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30404945 is about 5514.0679176086. The cubic root of 30404945 is about 312.1150716512.

The spelling of 30404945 in words is "thirty million, four hundred four thousand, nine hundred forty-five".