18242850 has 96 divisors (see below), whose sum is σ = 49193280. Its totient is φ = 4458240.

The previous prime is 18242837. The next prime is 18242857. The reversal of 18242850 is 5824281.

It is a super-2 number, since 2×18242850² = 665603152245000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (18242857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105364 + ... + 105536.

It is an arithmetic number, because the mean of its divisors is an integer number (512430).

Almost surely, 2^18242850 is an apocalyptic number.

18242850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18242850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24596640).

18242850 is an abundant number, since it is smaller than the sum of its proper divisors (30950430).

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

18242850 is a wasteful number, since it uses less digits than its factorization.

18242850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 18242850 is about 4271.1649464754. The cubic root of 18242850 is about 263.2474839881.

It can be divided in two parts, 1824 and 2850, that multiplied together give a square (5198400 = 2280²).

The spelling of 18242850 in words is "eighteen million, two hundred forty-two thousand, eight hundred fifty".