16240404 has 48 divisors (see below), whose sum is σ = 39513600. Its totient is φ = 5185920.

The previous prime is 16240403. The next prime is 16240417. The reversal of 16240404 is 40404261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16240403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55282 + ... + 55574.

It is an arithmetic number, because the mean of its divisors is an integer number (823200).

Almost surely, 2^16240404 is an apocalyptic number.

It is an amenable number.

16240404 is an abundant number, since it is smaller than the sum of its proper divisors (23273196).

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

16240404 is a wasteful number, since it uses less digits than its factorization.

16240404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 16240404 is about 4029.9384610686. The cubic root of 16240404 is about 253.2399833037.

Adding to 16240404 its reverse (40404261), we get a palindrome (56644665).

The spelling of 16240404 in words is "sixteen million, two hundred forty thousand, four hundred four".