16404118 has 4 divisors (see below), whose sum is σ = 24606180. Its totient is φ = 8202058.

The previous prime is 16404109. The next prime is 16404127. The reversal of 16404118 is 81140461.

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

It is an interprime number because it is at equal distance from previous prime (16404109) and next prime (16404127).

It is a junction number, because it is equal to n+sod(n) for n = 16404092 and 16404101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101028 + ... + 4101031.

It is an arithmetic number, because the mean of its divisors is an integer number (6151545).

Almost surely, 2^16404118 is an apocalyptic number.

16404118 is a deficient number, since it is larger than the sum of its proper divisors (8202062).

16404118 is an equidigital number, since it uses as much as digits as its factorization.

16404118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8202061.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 16404118 is about 4050.1997481606. The cubic root of 16404118 is about 254.0880819610.

Adding to 16404118 its reverse (81140461), we get a palindrome (97544579).

The spelling of 16404118 in words is "sixteen million, four hundred four thousand, one hundred eighteen".