30940518 has 16 divisors (see below), whose sum is σ = 70721280. Its totient is φ = 8840136.

The previous prime is 30940463. The next prime is 30940537. The reversal of 30940518 is 81504903.

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 7 ways as a sum of consecutive naturals, for example, 368298 + ... + 368381.

It is an arithmetic number, because the mean of its divisors is an integer number (4420080).

Almost surely, 2^30940518 is an apocalyptic number.

30940518 is an abundant number, since it is smaller than the sum of its proper divisors (39780762).

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

30940518 is a wasteful number, since it uses less digits than its factorization.

30940518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736691.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 30940518 is about 5562.4201567303. The cubic root of 30940518 is about 313.9370165910.

The spelling of 30940518 in words is "thirty million, nine hundred forty thousand, five hundred eighteen".