18410040 has 96 divisors (see below), whose sum is σ = 65286000. Its totient is φ = 4462080.

The previous prime is 18410039. The next prime is 18410057. The reversal of 18410040 is 4001481.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 18409995 and 18410022.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1636 + ... + 6284.

Almost surely, 2^18410040 is an apocalyptic number.

18410040 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 18410040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32643000).

18410040 is an abundant number, since it is smaller than the sum of its proper divisors (46875960).

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

18410040 is a wasteful number, since it uses less digits than its factorization.

18410040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 18410040 is about 4290.6922518400. The cubic root of 18410040 is about 264.0492332422.

The spelling of 18410040 in words is "eighteen million, four hundred ten thousand, forty".