16111404 has 36 divisors (see below), whose sum is σ = 40851720. Its totient is φ = 5353920.

The previous prime is 16111397. The next prime is 16111429. The reversal of 16111404 is 40411161.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18327 + ... + 19185.

It is an arithmetic number, because the mean of its divisors is an integer number (1134770).

Almost surely, 2^16111404 is an apocalyptic number.

It is an amenable number.

16111404 is an abundant number, since it is smaller than the sum of its proper divisors (24740316).

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

16111404 is a wasteful number, since it uses less digits than its factorization.

16111404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 16111404 is about 4013.9013440791. The cubic root of 16111404 is about 252.5676922061.

Adding to 16111404 its reverse (40411161), we get a palindrome (56522565).

The spelling of 16111404 in words is "sixteen million, one hundred eleven thousand, four hundred four".