18140024 has 32 divisors (see below), whose sum is σ = 39070080. Its totient is φ = 7734624.

The previous prime is 18140011. The next prime is 18140047. The reversal of 18140024 is 42004181.

It is a junction number, because it is equal to n+sod(n) for n = 18139978 and 18140005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11999 + ... + 13425.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^18140024 is an apocalyptic number.

18140024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18140024 is an abundant number, since it is smaller than the sum of its proper divisors (20930056).

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

18140024 is a wasteful number, since it uses less digits than its factorization.

18140024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 18140024 is about 4259.1107052999. The cubic root of 18140024 is about 262.7519528022.

The spelling of 18140024 in words is "eighteen million, one hundred forty thousand, twenty-four".