16340404 has 12 divisors (see below), whose sum is σ = 29080800. Its totient is φ = 8031608.

The previous prime is 16340381. The next prime is 16340407. The reversal of 16340404 is 40404361.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16340407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34384 + ... + 34855.

It is an arithmetic number, because the mean of its divisors is an integer number (2423400).

Almost surely, 2^16340404 is an apocalyptic number.

It is an amenable number.

16340404 is a deficient number, since it is larger than the sum of its proper divisors (12740396).

16340404 is a wasteful number, since it uses less digits than its factorization.

16340404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69302 (or 69300 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16340404 is about 4042.3265578130. The cubic root of 16340404 is about 253.7586936768.

Adding to 16340404 its reverse (40404361), we get a palindrome (56744765).

The spelling of 16340404 in words is "sixteen million, three hundred forty thousand, four hundred four".