16212404 has 24 divisors (see below), whose sum is σ = 30787680. Its totient is φ = 7425504.

The previous prime is 16212389. The next prime is 16212409. The reversal of 16212404 is 40421261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16212409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6107 + ... + 8349.

It is an arithmetic number, because the mean of its divisors is an integer number (1282820).

Almost surely, 2^16212404 is an apocalyptic number.

It is an amenable number.

16212404 is a deficient number, since it is larger than the sum of its proper divisors (14575276).

16212404 is a wasteful number, since it uses less digits than its factorization.

16212404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 16212404 is about 4026.4629639424. The cubic root of 16212404 is about 253.0943629841.

Adding to 16212404 its reverse (40421261), we get a palindrome (56633665).

The spelling of 16212404 in words is "sixteen million, two hundred twelve thousand, four hundred four".