30400340 has 24 divisors (see below), whose sum is σ = 64925280. Its totient is φ = 11953568.

The previous prime is 30400333. The next prime is 30400351. The reversal of 30400340 is 4300403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11702 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (2705220).

Almost surely, 2^30400340 is an apocalyptic number.

It is an amenable number.

30400340 is an abundant number, since it is smaller than the sum of its proper divisors (34524940).

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

30400340 is a wasteful number, since it uses less digits than its factorization.

30400340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25831 (or 25829 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30400340 is about 5513.6503334905. The cubic root of 30400340 is about 312.0993136610.

Adding to 30400340 its reverse (4300403), we get a palindrome (34700743).

The spelling of 30400340 in words is "thirty million, four hundred thousand, three hundred forty".