18140048 has 20 divisors (see below), whose sum is σ = 35242908. Its totient is φ = 9045120.

The previous prime is 18140047. The next prime is 18140063. The reversal of 18140048 is 84004181.

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 15618304 = 1588^2 + 3952^2 .

It is a super-2 number, since 2×18140048² = 658122682884608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18139999 and 18140026.

It is not an unprimeable number, because it can be changed into a prime (18140047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390 + ... + 8082.

Almost surely, 2^18140048 is an apocalyptic number.

It is an amenable number.

18140048 is a deficient number, since it is larger than the sum of its proper divisors (17102860).

18140048 is a wasteful number, since it uses less digits than its factorization.

18140048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18140048 is about 4259.1135227885. The cubic root of 18140048 is about 262.7520686794.

The spelling of 18140048 in words is "eighteen million, one hundred forty thousand, forty-eight".