18882215 has 8 divisors (see below), whose sum is σ = 24718608. Its totient is φ = 13732480.

The previous prime is 18882197. The next prime is 18882217. The reversal of 18882215 is 51228881.

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

It is not a de Polignac number, because 18882215 - 2⁸ = 18881959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18882217) 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 7 ways as a sum of consecutive naturals, for example, 171602 + ... + 171711.

It is an arithmetic number, because the mean of its divisors is an integer number (3089826).

Almost surely, 2^18882215 is an apocalyptic number.

18882215 is a deficient number, since it is larger than the sum of its proper divisors (5836393).

18882215 is a wasteful number, since it uses less digits than its factorization.

18882215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343329.

The product of its digits is 10240, while the sum is 35.

The square root of 18882215 is about 4345.3670731021. The cubic root of 18882215 is about 266.2876220650.

The spelling of 18882215 in words is "eighteen million, eight hundred eighty-two thousand, two hundred fifteen".