16424403 has 8 divisors (see below), whose sum is σ = 21994128. Its totient is φ = 10902144.

The previous prime is 16424383. The next prime is 16424407. The reversal of 16424403 is 30442461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16424403 - 2⁵ = 16424371 is a prime.

It is a super-2 number, since 2×16424403² = 539522027812818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16424407) 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, 11050 + ... + 12447.

It is an arithmetic number, because the mean of its divisors is an integer number (2749266).

Almost surely, 2^16424403 is an apocalyptic number.

16424403 is a deficient number, since it is larger than the sum of its proper divisors (5569725).

16424403 is a wasteful number, since it uses less digits than its factorization.

16424403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23733.

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

The square root of 16424403 is about 4052.7031719582. The cubic root of 16424403 is about 254.1927722118.

Adding to 16424403 its reverse (30442461), we get a palindrome (46866864).

The spelling of 16424403 in words is "sixteen million, four hundred twenty-four thousand, four hundred three".