18402048 has 162 divisors, whose sum is σ = 62098764. Its totient is φ = 5225472.

The previous prime is 18402031. The next prime is 18402073. The reversal of 18402048 is 84020481.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 112815 + ... + 112977.

Almost surely, 2^18402048 is an apocalyptic number.

18402048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18402048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31049382).

18402048 is an abundant number, since it is smaller than the sum of its proper divisors (43696716).

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

18402048 is a wasteful number, since it uses less digits than its factorization.

18402048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18402048 is about 4289.7608324940. The cubic root of 18402048 is about 264.0110188238.

The spelling of 18402048 in words is "eighteen million, four hundred two thousand, forty-eight".