16243404 has 48 divisors (see below), whose sum is σ = 40212480. Its totient is φ = 5088960.

The previous prime is 16243391. The next prime is 16243433. The reversal of 16243404 is 40434261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43362 + ... + 43734.

It is an arithmetic number, because the mean of its divisors is an integer number (837760).

Almost surely, 2^16243404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16243404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20106240).

16243404 is an abundant number, since it is smaller than the sum of its proper divisors (23969076).

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

16243404 is a wasteful number, since it uses less digits than its factorization.

16243404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 16243404 is about 4030.3106580014. The cubic root of 16243404 is about 253.2555755508.

Adding to 16243404 its reverse (40434261), we get a palindrome (56677665).

The spelling of 16243404 in words is "sixteen million, two hundred forty-three thousand, four hundred four".