18912048 has 80 divisors (see below), whose sum is σ = 50996736. Its totient is φ = 6035200.

The previous prime is 18911999. The next prime is 18912053. The reversal of 18912048 is 84021981.

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, 187198 + ... + 187298.

Almost surely, 2^18912048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18912048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25498368).

18912048 is an abundant number, since it is smaller than the sum of its proper divisors (32084688).

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

18912048 is a wasteful number, since it uses less digits than its factorization.

18912048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 18912048 is about 4348.7984547459. The cubic root of 18912048 is about 266.4277888569.

The spelling of 18912048 in words is "eighteen million, nine hundred twelve thousand, forty-eight".