30505900 has 36 divisors (see below), whose sum is σ = 66511368. Its totient is φ = 12144640.

The previous prime is 30505879. The next prime is 30505901. The reversal of 30505900 is 950503.

It is not an unprimeable number, because it can be changed into a prime (30505901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25107 + ... + 26293.

It is an arithmetic number, because the mean of its divisors is an integer number (1847538).

Almost surely, 2^30505900 is an apocalyptic number.

It is an amenable number.

30505900 is an abundant number, since it is smaller than the sum of its proper divisors (36005468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30505900 is a wasteful number, since it uses less digits than its factorization.

30505900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1451 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 30505900 is about 5523.2146436654. The cubic root of 30505900 is about 312.4601335810.

The spelling of 30505900 in words is "thirty million, five hundred five thousand, nine hundred".