18359040 has 144 divisors (see below), whose sum is σ = 67108608. Its totient is φ = 4190208.

The previous prime is 18359039. The next prime is 18359053. The reversal of 18359040 is 4095381.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 18358989 and 18359007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26539 + ... + 27221.

It is an arithmetic number, because the mean of its divisors is an integer number (466032).

Almost surely, 2^18359040 is an apocalyptic number.

18359040 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 18359040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33554304).

18359040 is an abundant number, since it is smaller than the sum of its proper divisors (48749568).

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

18359040 is an equidigital number, since it uses as much as digits as its factorization.

18359040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 18359040 is about 4284.7450332546. The cubic root of 18359040 is about 263.8051822575.

The spelling of 18359040 in words is "eighteen million, three hundred fifty-nine thousand, forty".