30508740 has 36 divisors (see below), whose sum is σ = 92543724. Its totient is φ = 8135616.

The previous prime is 30508733. The next prime is 30508811. The reversal of 30508740 is 4780503.

It can be written as a sum of positive squares in 2 ways, for example, as 20358144 + 10150596 = 4512^2 + 3186^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 84567 + ... + 84926.

It is an arithmetic number, because the mean of its divisors is an integer number (2570659).

Almost surely, 2^30508740 is an apocalyptic number.

30508740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30508740 is an abundant number, since it is smaller than the sum of its proper divisors (62034984).

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

30508740 is a wasteful number, since it uses less digits than its factorization.

30508740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169508 (or 169503 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 30508740 is about 5523.4717343352. The cubic root of 30508740 is about 312.4698296206.

The spelling of 30508740 in words is "thirty million, five hundred eight thousand, seven hundred forty".