16380538 has 8 divisors (see below), whose sum is σ = 24588000. Its totient is φ = 8184540.

The previous prime is 16380521. The next prime is 16380541. The reversal of 16380538 is 83508361.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963 + ... + 6961.

It is an arithmetic number, because the mean of its divisors is an integer number (3073500).

Almost surely, 2^16380538 is an apocalyptic number.

16380538 is a deficient number, since it is larger than the sum of its proper divisors (8207462).

16380538 is a wasteful number, since it uses less digits than its factorization.

16380538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 16380538 is about 4047.2877337793. The cubic root of 16380538 is about 253.9662777890.

Adding to 16380538 its reverse (83508361), we get a palindrome (99888899).

The spelling of 16380538 in words is "sixteen million, three hundred eighty thousand, five hundred thirty-eight".