16390416 has 40 divisors (see below), whose sum is σ = 48391744. Its totient is φ = 4682880.

The previous prime is 16390403. The next prime is 16390417. The reversal of 16390416 is 61409361.

It is not an unprimeable number, because it can be changed into a prime (16390417) 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, 24055 + ... + 24726.

Almost surely, 2^16390416 is an apocalyptic number.

16390416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16390416 is an abundant number, since it is smaller than the sum of its proper divisors (32001328).

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

16390416 is a wasteful number, since it uses less digits than its factorization.

16390416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48799 (or 48793 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16390416 is about 4048.5078732787. The cubic root of 16390416 is about 254.0173175206.

Adding to 16390416 its reverse (61409361), we get a palindrome (77799777).

The spelling of 16390416 in words is "sixteen million, three hundred ninety thousand, four hundred sixteen".