16442404 has 24 divisors (see below), whose sum is σ = 31677408. Its totient is φ = 7405440.

The previous prime is 16442399. The next prime is 16442407. The reversal of 16442404 is 40424461.

16442404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16442404³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16442407) 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, 3319 + ... + 6625.

It is an arithmetic number, because the mean of its divisors is an integer number (1319892).

Almost surely, 2^16442404 is an apocalyptic number.

It is an amenable number.

16442404 is a deficient number, since it is larger than the sum of its proper divisors (15235004).

16442404 is a wasteful number, since it uses less digits than its factorization.

16442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3433 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 16442404 is about 4054.9234271438. The cubic root of 16442404 is about 254.2856026475.

Adding to 16442404 its reverse (40424461), we get a palindrome (56866865).

The spelling of 16442404 in words is "sixteen million, four hundred forty-two thousand, four hundred four".