16227805 has 32 divisors (see below), whose sum is σ = 22861440. Its totient is φ = 10932480.

The previous prime is 16227803. The next prime is 16227821. The reversal of 16227805 is 50872261.

16227805 = T₂₀₉ + T₂₁₀ + ... + T₄₇₃.

It is not a de Polignac number, because 16227805 - 2¹ = 16227803 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16227803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55239 + ... + 55531.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^16227805 is an apocalyptic number.

It is an amenable number.

16227805 is a deficient number, since it is larger than the sum of its proper divisors (6633635).

16227805 is a wasteful number, since it uses less digits than its factorization.

16227805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 16227805 is about 4028.3749825457. The cubic root of 16227805 is about 253.1744800899.

The spelling of 16227805 in words is "sixteen million, two hundred twenty-seven thousand, eight hundred five".