50309018 has 32 divisors (see below), whose sum is σ = 82280448. Its totient is φ = 22982400.

The previous prime is 50308987. The next prime is 50309033. The reversal of 50309018 is 81090305.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263303 + ... + 263493.

It is an arithmetic number, because the mean of its divisors is an integer number (2571264).

Almost surely, 2^50309018 is an apocalyptic number.

50309018 is a deficient number, since it is larger than the sum of its proper divisors (31971430).

50309018 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (50309017) it forms an eRAP, since the sums of their prime factors are consecutive (397 and 398).

50309018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 50309018 is about 7092.8850265601. The cubic root of 50309018 is about 369.1605463698.

The spelling of 50309018 in words is "fifty million, three hundred nine thousand, eighteen".