16228947 has 24 divisors (see below), whose sum is σ = 25420176. Its totient is φ = 9182208.

The previous prime is 16228879. The next prime is 16228969. The reversal of 16228947 is 74982261.

It is not a de Polignac number, because 16228947 - 2⁷ = 16228819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16228987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16123 + ... + 17099.

It is an arithmetic number, because the mean of its divisors is an integer number (1059174).

Almost surely, 2^16228947 is an apocalyptic number.

16228947 is a deficient number, since it is larger than the sum of its proper divisors (9191229).

16228947 is a wasteful number, since it uses less digits than its factorization.

16228947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1100 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 16228947 is about 4028.5167245526. The cubic root of 16228947 is about 253.1804188367.

The spelling of 16228947 in words is "sixteen million, two hundred twenty-eight thousand, nine hundred forty-seven".