16426404 has 72 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 5155200.

The previous prime is 16426381. The next prime is 16426411. The reversal of 16426404 is 40462461.

16426404 is a `hidden beast` number, since 16 + 4 + 2 + 640 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45577 + ... + 45935.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

Almost surely, 2^16426404 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 16426404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22014720).

16426404 is an abundant number, since it is smaller than the sum of its proper divisors (27603036).

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

16426404 is a wasteful number, since it uses less digits than its factorization.

16426404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 16426404 is about 4052.9500367017. The cubic root of 16426404 is about 254.2030946384.

Adding to 16426404 its reverse (40462461), we get a palindrome (56888865).

The spelling of 16426404 in words is "sixteen million, four hundred twenty-six thousand, four hundred four".