16000427 has 4 divisors (see below), whose sum is σ = 16016160. Its totient is φ = 15984696.

The previous prime is 16000409. The next prime is 16000447. The reversal of 16000427 is 72400061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16000427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16000399 and 16000408.

It is not an unprimeable number, because it can be changed into a prime (16000447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6227 + ... + 8412.

It is an arithmetic number, because the mean of its divisors is an integer number (4004040).

Almost surely, 2^16000427 is an apocalyptic number.

16000427 is a deficient number, since it is larger than the sum of its proper divisors (15733).

16000427 is a wasteful number, since it uses less digits than its factorization.

16000427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15732.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 16000427 is about 4000.0533746439. The cubic root of 16000427 is about 251.9864515686.

Adding to 16000427 its reverse (72400061), we get a palindrome (88400488).

The spelling of 16000427 in words is "sixteen million, four hundred twenty-seven", and thus it is an aban number.