18282215 has 16 divisors (see below), whose sum is σ = 25193280. Its totient is φ = 12476160.

The previous prime is 18282203. The next prime is 18282283. The reversal of 18282215 is 51228281.

It is a happy number.

It is not a de Polignac number, because 18282215 - 2¹⁰ = 18281191 is a prime.

It is a congruent number.

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, 6875 + ... + 9155.

It is an arithmetic number, because the mean of its divisors is an integer number (1574580).

Almost surely, 2^18282215 is an apocalyptic number.

18282215 is a deficient number, since it is larger than the sum of its proper divisors (6911065).

18282215 is a wasteful number, since it uses less digits than its factorization.

18282215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522.

The product of its digits is 2560, while the sum is 29.

The square root of 18282215 is about 4275.7706907644. The cubic root of 18282215 is about 263.4366958793.

The spelling of 18282215 in words is "eighteen million, two hundred eighty-two thousand, two hundred fifteen".