16380516 has 12 divisors (see below), whose sum is σ = 38221232. Its totient is φ = 5460168.

The previous prime is 16380509. The next prime is 16380517. The reversal of 16380516 is 61508361.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (16380517) 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, 682510 + ... + 682533.

Almost surely, 2^16380516 is an apocalyptic number.

It is an amenable number.

16380516 is an abundant number, since it is smaller than the sum of its proper divisors (21840716).

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

16380516 is a wasteful number, since it uses less digits than its factorization.

16380516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365050 (or 1365048 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16380516 is about 4047.2850159088. The cubic root of 16380516 is about 253.9661640918.

Adding to 16380516 its reverse (61508361), we get a palindrome (77888877).

The spelling of 16380516 in words is "sixteen million, three hundred eighty thousand, five hundred sixteen".