18489282 has 16 divisors (see below), whose sum is σ = 42261312. Its totient is φ = 5282640.

The previous prime is 18489281. The next prime is 18489287. The reversal of 18489282 is 28298481.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 440221 = 18489282 / (1 + 8 + 4 + 8 + 9 + 2 + 8 + 2).

It is not an unprimeable number, because it can be changed into a prime (18489281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220069 + ... + 220152.

It is an arithmetic number, because the mean of its divisors is an integer number (2641332).

Almost surely, 2^18489282 is an apocalyptic number.

18489282 is an abundant number, since it is smaller than the sum of its proper divisors (23772030).

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

18489282 is a wasteful number, since it uses less digits than its factorization.

18489282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440233.

The product of its digits is 73728, while the sum is 42.

The square root of 18489282 is about 4299.9165108174. The cubic root of 18489282 is about 264.4275384187.

The spelling of 18489282 in words is "eighteen million, four hundred eighty-nine thousand, two hundred eighty-two".