18608940 has 144 divisors (see below), whose sum is σ = 67022592. Its totient is φ = 4245696.

The previous prime is 18608917. The next prime is 18608951. The reversal of 18608940 is 4980681.

It is a happy number.

18608940 is a `hidden beast` number, since 1 + 8 + 608 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18608895 and 18608904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33747 + ... + 34293.

Almost surely, 2^18608940 is an apocalyptic number.

18608940 is a gapful number since it is divisible by the number (10) 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 18608940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33511296).

18608940 is an abundant number, since it is smaller than the sum of its proper divisors (48413652).

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

18608940 is a wasteful number, since it uses less digits than its factorization.

18608940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18608940 is about 4313.8080624896. The cubic root of 18608940 is about 264.9967485064.

The spelling of 18608940 in words is "eighteen million, six hundred eight thousand, nine hundred forty".