16840147 has 4 divisors (see below), whose sum is σ = 17198496. Its totient is φ = 16481800.

The previous prime is 16840111. The next prime is 16840157. The reversal of 16840147 is 74104861.

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

It is a cyclic number.

It is not a de Polignac number, because 16840147 - 2¹¹ = 16838099 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16840157) 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, 179104 + ... + 179197.

It is an arithmetic number, because the mean of its divisors is an integer number (4299624).

Almost surely, 2^16840147 is an apocalyptic number.

16840147 is a deficient number, since it is larger than the sum of its proper divisors (358349).

16840147 is an equidigital number, since it uses as much as digits as its factorization.

16840147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358348.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 16840147 is about 4103.6748165516. The cubic root of 16840147 is about 256.3196842410.

The spelling of 16840147 in words is "sixteen million, eight hundred forty thousand, one hundred forty-seven".