18240350 has 24 divisors (see below), whose sum is σ = 34039488. Its totient is φ = 7272000.

The previous prime is 18240331. The next prime is 18240353. The reversal of 18240350 is 5304281.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18240353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29747 + ... + 30353.

It is an arithmetic number, because the mean of its divisors is an integer number (1418312).

Almost surely, 2^18240350 is an apocalyptic number.

18240350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18240350 is a deficient number, since it is larger than the sum of its proper divisors (15799138).

18240350 is a wasteful number, since it uses less digits than its factorization.

18240350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 18240350 is about 4270.8722762452. The cubic root of 18240350 is about 263.2354582944.

The spelling of 18240350 in words is "eighteen million, two hundred forty thousand, three hundred fifty".