30394240 has 32 divisors (see below), whose sum is σ = 72662760. Its totient is φ = 12157440.

The previous prime is 30394237. The next prime is 30394253. The reversal of 30394240 is 4249303.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23106 + ... + 24385.

Almost surely, 2^30394240 is an apocalyptic number.

It is an amenable number.

30394240 is an abundant number, since it is smaller than the sum of its proper divisors (42268520).

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

30394240 is an equidigital number, since it uses as much as digits as its factorization.

30394240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47510 (or 47498 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 30394240 is about 5513.0971331911. The cubic root of 30394240 is about 312.0784374344.

The spelling of 30394240 in words is "thirty million, three hundred ninety-four thousand, two hundred forty".