16400516 has 12 divisors (see below), whose sum is σ = 31310160. Its totient is φ = 7454760.

The previous prime is 16400513. The next prime is 16400539. The reversal of 16400516 is 61500461.

It is a junction number, because it is equal to n+sod(n) for n = 16400491 and 16400500.

It is not an unprimeable number, because it can be changed into a prime (16400513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186326 + ... + 186413.

It is an arithmetic number, because the mean of its divisors is an integer number (2609180).

Almost surely, 2^16400516 is an apocalyptic number.

It is an amenable number.

16400516 is a deficient number, since it is larger than the sum of its proper divisors (14909644).

16400516 is a wasteful number, since it uses less digits than its factorization.

16400516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372754 (or 372752 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 16400516 is about 4049.7550543212. The cubic root of 16400516 is about 254.0694831298.

Adding to 16400516 its reverse (61500461), we get a palindrome (77900977).

The spelling of 16400516 in words is "sixteen million, four hundred thousand, five hundred sixteen".