16240418 has 4 divisors (see below), whose sum is σ = 24360630. Its totient is φ = 8120208.

The previous prime is 16240417. The next prime is 16240429. The reversal of 16240418 is 81404261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13082689 + 3157729 = 3617^2 + 1777^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16240417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060103 + ... + 4060106.

Almost surely, 2^16240418 is an apocalyptic number.

16240418 is a deficient number, since it is larger than the sum of its proper divisors (8120212).

16240418 is an equidigital number, since it uses as much as digits as its factorization.

16240418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120211.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 16240418 is about 4029.9401980675. The cubic root of 16240418 is about 253.2400560720.

Adding to 16240418 its reverse (81404261), we get a palindrome (97644679).

The spelling of 16240418 in words is "sixteen million, two hundred forty thousand, four hundred eighteen".