18116040 has 32 divisors (see below), whose sum is σ = 54348480. Its totient is φ = 4830912.

The previous prime is 18116023. The next prime is 18116057. The reversal of 18116040 is 4061181.

It is an interprime number because it is at equal distance from previous prime (18116023) and next prime (18116057).

It is a junction number, because it is equal to n+sod(n) for n = 18115998 and 18116016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75364 + ... + 75603.

It is an arithmetic number, because the mean of its divisors is an integer number (1698390).

Almost surely, 2^18116040 is an apocalyptic number.

18116040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18116040 is an abundant number, since it is smaller than the sum of its proper divisors (36232440).

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

18116040 is a wasteful number, since it uses less digits than its factorization.

18116040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150981 (or 150977 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 18116040 is about 4256.2941627665. The cubic root of 18116040 is about 262.6361017570.

The spelling of 18116040 in words is "eighteen million, one hundred sixteen thousand, forty".