18912248 has 16 divisors (see below), whose sum is σ = 35506680. Its totient is φ = 9443808.

The previous prime is 18912241. The next prime is 18912251. The reversal of 18912248 is 84221981.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18912241) 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 3 ways as a sum of consecutive naturals, for example, 10811 + ... + 12437.

Almost surely, 2^18912248 is an apocalyptic number.

It is an amenable number.

18912248 is a deficient number, since it is larger than the sum of its proper divisors (16594432).

18912248 is a wasteful number, since it uses less digits than its factorization.

18912248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086 (or 3082 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 18912248 is about 4348.8214495424. The cubic root of 18912248 is about 266.4287280355.

The spelling of 18912248 in words is "eighteen million, nine hundred twelve thousand, two hundred forty-eight".