16240518 has 48 divisors (see below), whose sum is σ = 40893216. Its totient is φ = 4561920.

The previous prime is 16240489. The next prime is 16240519. The reversal of 16240518 is 81504261.

It is a junction number, because it is equal to n+sod(n) for n = 16240491 and 16240500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16240519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6630 + ... + 8742.

It is an arithmetic number, because the mean of its divisors is an integer number (851942).

Almost surely, 2^16240518 is an apocalyptic number.

16240518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16240518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20446608).

16240518 is an abundant number, since it is smaller than the sum of its proper divisors (24652698).

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

16240518 is a wasteful number, since it uses less digits than its factorization.

16240518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 16240518 is about 4029.9526051804. The cubic root of 16240518 is about 253.2405758442.

Adding to 16240518 its reverse (81504261), we get a palindrome (97744779).

The spelling of 16240518 in words is "sixteen million, two hundred forty thousand, five hundred eighteen".