18516048 has 40 divisors (see below), whose sum is σ = 48285600. Its totient is φ = 6113664.

The previous prime is 18516041. The next prime is 18516049. The reversal of 18516048 is 84061581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18516041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3463 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (1207140).

Almost surely, 2^18516048 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 18516048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24142800).

18516048 is an abundant number, since it is smaller than the sum of its proper divisors (29769552).

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

18516048 is a wasteful number, since it uses less digits than its factorization.

18516048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659 (or 3653 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18516048 is about 4303.0277712327. The cubic root of 18516048 is about 264.5550763604. Note that the first 3 decimals are identical.

The spelling of 18516048 in words is "eighteen million, five hundred sixteen thousand, forty-eight".