18482278 has 8 divisors (see below), whose sum is σ = 27742680. Its totient is φ = 9234720.

The previous prime is 18482273. The next prime is 18482279. The reversal of 18482278 is 87228481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18482278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18482273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (3467835).

Almost surely, 2^18482278 is an apocalyptic number.

18482278 is a deficient number, since it is larger than the sum of its proper divisors (9260402).

18482278 is a wasteful number, since it uses less digits than its factorization.

18482278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422.

The product of its digits is 57344, while the sum is 40.

The square root of 18482278 is about 4299.1019992552. The cubic root of 18482278 is about 264.3941445784.

It can be divided in two parts, 184822 and 78, that added together give a square (184900 = 430²).

The spelling of 18482278 in words is "eighteen million, four hundred eighty-two thousand, two hundred seventy-eight".