18575648 has 48 divisors (see below), whose sum is σ = 45017280. Its totient is φ = 7347456.

The previous prime is 18575647. The next prime is 18575707. The reversal of 18575648 is 84657581.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18575599 and 18575608.

It is not an unprimeable number, because it can be changed into a prime (18575647) 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, 278 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (937860).

Almost surely, 2^18575648 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 18575648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22508640).

18575648 is an abundant number, since it is smaller than the sum of its proper divisors (26441632).

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

18575648 is a wasteful number, since it uses less digits than its factorization.

18575648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409 (or 6401 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

The square root of 18575648 is about 4309.9475634861. The cubic root of 18575648 is about 264.8386249003.

The spelling of 18575648 in words is "eighteen million, five hundred seventy-five thousand, six hundred forty-eight".